| K, k | |
| k'ai sugges | successful |
| ke | who, what, which, that (relative pronoun) |
| ke? | which? |
| ke gascyn wein gu'n plath | potluck (meal) |
| ke dem? | when? |
| ke gos? | what? |
| ke sig? | how...? (with adjective) |
| kebil (m) | hair, a strand of . . . |
| kefes (f) | shirt |
| keib (f) | copy, replica |
| keimfent (m) | change |
| keirddal | wholehearted |
| keistar | to warn |
| keithar | to catch, to chase, to capture, to catch up (with someone) |
| kelchin (m) | morter |
| kelfin | Kelvin |
| kemin (m) | road, roadway |
| Kemr | Cambria, where the Brithenig speakers come from |
| Kemruis | Cambrian, of Kemr |
| kenig (m) | penny |
| kentrifewer | to contribute |
| kentrifydiwn (f) | contribution |
| kepelleir (m) | hood |
| kerbid (m) | coach |
| kernewig | Kerno |
| kerosen (m) | kerosene |
| kerrisar | to transport, ship |
| kerybin (m) | cherub |
| kesin (f) | outhouse, toilet |
| kesketh (f) | cap |
| kestigar | to punish, to admonish |
| kewdad (f) | heart (emotional centre) |
| ki? | who? whose? |
| kilomedr (m) | kilometre |
| k'log? | where? |
L, l | |
| licar | to like (standard, but not good, Brithenig) |
| liter (m) | litre |
| lla | the (f), her, them(f) |
| llâ | there |
| llabyrint (m) | labyrinth |
| llad | wide |
| llad (m) | side |
| lladrun (m) | thief |
| llaesar | to leave, to let, to let go, to forsake |
| llaeth (m) | milk |
| laethyg (f) | lettuce |
| llaf (m) | application |
| llafr (m) | lip |
| llafr (f) | pair of lips |
| llafur (m) | work, labour, trade |
| llafur (m) saer | joinery |
| llafuradur (m) | worker |
| llafurafur (m) | activity |
| llafurar | to work |
| llafurar in ill tarfin | to work out |
| llafurcoleint (f) | running |
| llag (f) | string |
| llag (m) | lake |
| lagref (f) | tear, teardrop |
| llaig | lay |
| llagun (m) | pool |
| llan (f) | wool |
| llangur (m) | fever |
| llar (m) | ground |
| llarar | to fell |
| llary | wide ranging |
| llassarsi | to get tired |
| llawar | to wash |
| llawn (f) | blade |
| llan (f) | parish, village |
| lle | him, her, it, them (indirect object) |
| Lledew | Britanny |
| llefeg' | slug |
| llefiathan (m) | leviathan |
| llegillatyr (f) | legislature |
| llegillediwn (f) | legislation |
| llegym (m) | vegetable, veggies |
| lleil (m) | lily |
| lleinc (f) | spear |
| lleir | to read, reading |
| lleith (m) | bed |
| llemar | to start, to leap, to rush, to hurtle, to spring |
| llemon (m) | lemon |
| llengdydd (m) | length |
| llent | slow |
| llenhewl (m) | sheet (of cloth) |
| lles (m) | interest |
| llesbian | lesbian |
| llesc | loose |
| lleth (m) | trail |
| llew | light in weight |
| llew (m, f) | lion, lioness |
| llewar | to raise |
| llewant | east |
| llewg (f) | league (measure) |
| llibell (m) | pamphlet |
| llifell (m) | level, standard |
| llifer | free, clear |
| lliferadiwn (f) | deliverance |
| lliferthad (f) | freedom |
| llifidad | limited |
| llifr (m) | book |
| llifr di llo ddith | phrasebook |
| llifrar | to deliver, to free, to set free, to release, to give off |
| llifreir (f) | library |
| llifus | slime (adjective) |
| lligad contr | subject to |
| lligar | to find |
| llimhidd | limpid |
| llin (f) | net |
| llîn | slippery |
| llinewdig (m) | descent |
| llinghedig (m) | language, tongue |
| llingw (f) | tongue |
| llingwistig | linguistic |
| llîr (m) | pound |
| llist (m) | sheet, list |
| llitheir (m) | letter |
| llithiwn (f) | porridge |
| llithreir | literary |
| lliw (m) | paint |
| llo | the (pl), him, them (m) |
| llodd (f) | praise |
| llodd (m) | darling |
| lloddar | to praise |
| llofan (f) | line |
| llog | local |
| llog (m) | place, position, haunt, where (relative) |
| llog (m) inghontr | venue |
| llogaliddar | to locate |
| llogheir | rental |
| Llondin (m) | London |
| llong | long, far out, far, way |
| llong (f) | ship, craft |
| llonghyr (f) | length, extent |
| llub (m) | wolf |
| llud (m) | speed, pace |
| lluf (m) | bin |
| llug (m, f) | mouse |
| llugrar | to get, to obtain, to succeed, to score, have (give birth |
| llugrar e llugrar | touch and go |
| llugrar yn wist | to take or have a look |
| llugrar in yn tarfin | to reach a goal |
| llugrediw | prosperous, flourishing |
| llui (m) | law, act |
| lluial | legal |
| lluin (m) | plain, lawn |
| lluithar | to wrestle |
| llum | bare |
| llyf (m) | plant |
| llyg (m) | light |
| llyg (m) di'll diwrn | daylight |
| llyg (m) di'll sul | sunshine |
| llyger | to shine |
| Llyn | Monday |
| llyn (f) | moon |
M, m | |
| mab (m) | boy, chap, guy |
| madeir (f) | material, matter, stuff |
| madeir (f) grydd | source material |
| madr (f) | mother |
| madr (f) fethidd | godmother |
| madyr | ripe |
| madyrar | to mature |
| maen | the Great (used as a title) |
| maeniffigar | to magnify |
| maer | bigger, older, elder |
| maestad (f) | majesty |
| magasin (m) | magazine |
| mageddein | Macedonian |
| maglad | spotted |
| magr | thin |
| mai | but, save |
| mai lla sia menhiwn rhen | forsooth! (exclamation) |
| Mai | May |
| maistr | Mr, sir, male teacher, master |
| maistres | mrs, miss, madam, female teacher |
| mal | bad(ly), evil, sorry |
| mal (m) | wrong, evil |
| mal cumeg | I'm sorry |
| maldiger | to curse |
| maldith | bloody |
| maldith (m) | curse |
| maled | sick |
| maled (m) | patient |
| malffer (f) | monster |
| malw (f) | snails |
| mam (f) | mum |
| man (m) | hand |
| Maneg (f) | Channel |
| maneir (f) | manner, means |
| maner | to stay, to remain |
| mangrof (m) | mangrove |
| manugar | to eat |
| manyscrith (m) | script, manuscript |
| manysturpediwn (f) | masturbation |
| map (f) | map |
| mar | important |
| march (f) | horse |
| marchages (f) | horsewoman |
| marchsollteir (m) | hussar |
| margarin (f) | margarine |
| marmit (m) | marmite (yeast extract) |
| Marth | Tuesday |
| marthel (m) | hammer |
| marthyr (m) | martyr |
| marwar | to slay |
| mas (f) | lump |
| mas (m) | farm |
| mascul | male |
| masculiuith | gay, homosexual |
| math | insane |
| math (f) | blanket |
| mathin (f) | morning |
| mathin (f) bog | small hours of the morning |
| mathinal | morning (adjective) |
| mayones | mayonaise |
| medaill (f) | medal |
| medd | middle, central, mid |
| medd ifern | midwinter |
| medd (m) | half, middle |
| meddal | intermediate |
| meddbuith (m) | centre |
| meddbuitharsi | to focus on |
| Meddfor (f) | Mediterranean |
| meddgartheir (m) | centre |
| meddig (m) | doctor |
| meddigal | medical |
| meddseinar | to centre |
| medissif | same, even |
| mefeiradur (m) | student |
| mefeirar (m) | to study, to muse |
| meg | with me |
| megin (f) ffog | fire engine |
| meginober (f) | machinery |
| meidd (m) | instrument |
| meillediwn (f) | softening, a grammatical term |
| memr (f) | limb |
| men (f) | battlements |
| menhal | mental |
| mel | dim |
| meleidd (f) | melody, air |
| melin (m) | unit |
| meliwr | better |
| meliwrar | to improve |
| meliwrant (m) | improvement |
| mellt | lovely, enjoyable, pleasant, nice |
| melltar | to consider; to joke |
| melltediwn (f) | consideration |
| melwin | snail, slug |
| memr (m) | member |
| mengib (m) | slave; llo fengib, the slaves, used as an adjective |
| mengibdad (f) | slavery |
| menech | often |
| menffest | manifest |
| menhir | to lie |
| meniwneg (f) | lie |
| ment (m) | memory |
| menus | faulty |
| merch (f) | girl, maiden, maid |
| merch (m) | goods |
| merchadun (m) | supermarket |
| Merchyr (m) | Wednesday |
| meren (f) | supper |
| meridar | to deserve |
| merrid | angry |
| merrir | to anger |
| merrirsi | to get angry |
| mescel (f) | jaw |
| messia (m) | messiah |
| mestigar | to chew |
| mesyr (f) | measure |
| meteor (m) | meteor |
| Methef (m) | June |
| method (m) | method |
| mew | my |
| meryn (m) | edge |
| meryn (m) ill poifent | kerb |
| mi | me (subject) |
| mil | thousand |
| milid (m) | warrior |
| milides (f) | female warrior |
| millein (m) | millenium |
| milliwn | million |
| mimir | to imagine |
| min | less, after a negative clause it is translated as 'either' |
| minagiant | menacing |
| minegiar | to threaten |
| mineiġ (f) | threat, intimidation |
| ministeir (f) | ministry |
| ministr (m) | minister |
| ministuir (m) | service, department |
| ministuirgar | ministering |
| mintr | while, during (conjunction) |
| mirant (m) | migrant |
| mirar | to look at, to stare |
| mirar di trawers | to frown at |
| mirefel (f) | wonder |
| mirefilus | wonderful, wondrous, marvellous |
| misclar | to mix, to muddle |
| miserigheirdd (f) | mercy (of God) |
| misyrgherddius | merciful |
| missiwn (f) | mission |
| missiwn-ci (f) | delivery |
| missiwneir (m) | sender |
| mithen | mailing |
| mither | to send, to draft, to mail, to deliver |
| mither afodd | to send off |
| mither inawant | to forward |
| mither yn anynt | to advertise |
| modd (m) | way |
| modurgas (f) | garage |
| moefil (m pl) | furniture |
| moillar | to soften |
| moillediwn (f) | moistening |
| moleist (f) | inconvenience |
| mollt | whether |
| monag (m) | monk |
| monaglog (m) | monastery |
| monhar | to go up |
| monseniwr (m) | monsignior |
| mont (m) | mountain |
| monyfent (f) | cemetary |
| monyfent (m) | monument |
| mor (f) | sea, ocean |
| moral (f) | morals |
| mordellediwn (f) | nibble |
| morew (f) | tide |
| morfarch (f) | walrus |
| morin | marine |
| morir | to die |
| mors (f) | bait |
| morth | dead, extinct |
| morth (m) | death, extinction |
| morth fil yn claw arch | dead as a door nail |
| morthal | deadly, fatal |
| mostrar | to show, to display, to exhibit |
| mui | me (disjunctive) |
| muidfent | delicately |
| muin | small (with definite article means 'minumum, minimal') |
| muin (m) | metal |
| muineir (f) | mine |
| muineir (m) | miner |
| muingoant | mining |
| muis (f) | table |
| muis (m) | month |
| muisalfent | monthly |
| Muisnir (m) | November |
| muisonedig (m) | household |
| mull (m) | pattern |
| mullt (di) | many, lots, a lot, very much, extra, heaps |
| mulltisaf | a great deal, a great amount |
| mulyer | to milk |
| mun | clean |
| mun (m) | world |
| munadur (m) cemine | chimneysweep |
| munal | worldly |
| munar | to clean, to clear |
| munllad | global |
| mustardd (f) | mustard |
| mustuil (f) | weasel |
| mydar | to change |
| myl | better (adverb) |
| mynigibal | city (adj) |
| myr (m) | wall |
| mysculus | well-muscled, muscular |
| mys (f) | genius |
| myseg (f) | music |
| mysigal | musical |