Words for each, every, all and related things in Celtic languages.

Words marked with a * are reconstructions.
| Proto-Celtic | *kʷākʷos = everyone, everybody, each, every | 
|---|---|
| Transalpine Gaulish | papos = each, every (?) | 
| Old Irish (Goídelc) | cách, cach [kax] = each, every, all, everyone cach la céin = one at a time cechtar = both, each | 
| Middle Irish (Gaoidhealg) | cach, cech [kax / kex] = each, every, all, cách, cach = the one, each, everyone, all, the rest cechtar = each (of), both (of), either (of) | 
| Irish (Gaeilge) | gach [ɡax / ɡɑx] = every, each, everything gach rud = everything gach aon, gach uile = every gach aon duine = each, every, person, everybody gach bliain, gach uile bhliain = every year ceachtar [ˈcaxt̪ˠəɾˠ] = either, one or other of two | 
| Scottish Gaelic (Gàidhlig) | gach [gax] = every, each, all, per gach a chèile = each other gach bliadhna = every year, annually gach dùrachd = best regards, yours sincerely gach pearsa = per capita gach ràith = every season, seasonally, every quarter, quarterly gach rud = everything gach uile [gax ulə] = every, each | 
| Manx (Gaelg) | dagh [dax] = each, every, both, singular gagh = each, every dagh blein, gagh blein = annually, yearly dagh laa, gagh laa = daily, every day gagh-laa = ordinary dagh ooilley, dagh un = every dagh unnane = every one dagh ynnyd, dagh ooilley ard, dagh ooilley raad = everywhere dagh ooilley nhee = everything dagh ooilley phersoon = everybody dagh ooilley raad = everywhere cagh = all, everyone, everybody cagh elley = everyone else, rest cagh yt cheilley = reciprocal | 
| Proto-Brythonic | *pọb, *pāpos = every, each (?) | 
| Old Welsh (Kembraec) | paup = every, each | 
| Middle Welsh (Kymraec) | pop, pob = every, each, all, all manner of, every type of pobed = entirety pobua, pop wa, pob va = everywhere, every place pob uann, popmann, pop mann = everywhere, every place, every part pob un, pob vn, pobun everyone, everybody, each one, every (single) one, all | 
| Welsh (Cymraeg) | pob [poːb] = every, each, all, all manner of, every type of pob dim, popeth = everything pobfa, pob fa = everywhere, every place pob lle poblle = every place, everywhere poblleath, pobmanrwydd = ubiquity, omnipresence pobman, pob man = everywhere, every place, every part pobun, pob un everyone, everybody, each one, every (single) one, all | 
| Middle Cornish (Cernewec) | pép, péb = every one pob, póp, pôb, pôp, pûb, pûp = every, all pop, pób = every, each pepynag, pepenag = whatsoever, whatever | 
| Cornish (Kernewek) | peub, pob = all, everybody, everyone pub = each, every pub eur = always pub huni = everybody, everyone pub le = everywhere pub pres, pub prys, pub termyn = always, all the time pub tra, puptra = everything pub dedhyek, pubdedhyek = daily pubonan, pubonen = everybody | 
| Old Breton (Brethonoc) | pop = each, every | 
| Middle Breton (Brezonec) | pep = each, every pep vnan = each and every, everybody, everyone | 
| Breton (Brezhoneg) | pep [pep] = each, every a bep eil = alternatively in turns bemdez [ˈbɛmde(s)] = every day bemnoz [ˈbɛmnos] = every night pep hini, pep unan = each and every, everybody, everyone (a) pep lec’h = everywhere pep tro = every time | 
Etymology: either from Proto-Indo-European *kʷo-h₃kʷ-os, from *kʷós (which, what) and *h₃kʷ-os (to see), or from PIE *kʷeh₂-kʷos [Source]. Words from the same roots possibly include how in English, hoe (how) in Dutch, hve (how, like as) in Icelandic, con (with, together) in Italian, com (with, against, together) in Portuguese, cu in Romanian, and cual (like, as, in the manner of) in Spanish [Source].
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| Proto-Celtic | *olyos = all | 
|---|---|
| Gaulish | ollos = everything, everyone (?) | 
| Old Irish (Goídelc) | (h)uile, (h)ule [(h)ˈulʲe] = all, whole | 
| Middle Irish (Gaoidhealg) | uile [ˈulʲə] = all, every, the whole, everyone | 
| Irish (Gaeilge) | uile [ˈɪlʲə / ˈɛlʲə] = all, every, whole, wholly, entirely uilechoiteann = general, universal uilechumhachtach = omnipotent, almighty uilefheasach = omniscient uilefhóinteach = all-purpose uileghabhálach = comprehensive, compendious, exhaustive uileláithreach = omnipresent, ubiquitous uiliteach = omnivorous | 
| Scottish Gaelic (Gàidhlig) | uile [ulə] = all, every, entire, total uil-fhiosrach = all-knowing, omniscient uile-amasach [ɯl aməsəx] = all-purpose uile-bhiast = monster uile-chinnteachd = surety, certainty uile-choitcheann [ulə xɔhdʲçən̪ˠ] = universal uileas [uləs] = all, every | 
| Manx (Gaelg) | ooilley [ulʲə / ulʲu] = all, whole, entire, everyone, everybody ooilley cooidjagh all together ooilley kiart = all right, alright, OK ooilley dy lieragh = altogether ooilley mygeart = all around, everywhere, round about, rampant ooilley-niartal = almighty ooilley smaghtagh = totalitarian | 
| Old Welsh (Kembraec) | hol = all, the whole, everything, everyone | 
| Middle Welsh (Kymraec) | oll, holl = all, the whole, everything, everyone, holla()l hollaul, hollawl, hollaỽl = whole, complete, entire holl gyuoethaỽc, hollgyuoethauc, hollgyuoethawc = almighty, omnipotent, all-powerful | 
| Welsh (Cymraeg) | holl, oll [hoːɬ] = all, the whole, everything, everyone, entire, complete, total, completely, entirely oll yn oll = all in all (h)ollfydol = cosmic, universal, global (h)ollgyfoethog = almighty, omnipotent, all-powerful (h)ollol = whole, complete, entire (h)olloldeb, hollolrwydd = universality, generality (h)ollwybodol = omniscient, all-knowing, know-alls (h)ollysydd = omnivore | 
| Middle Cornish (Cernewec) | oll, ol = all, every olgallusec, olgalluster = almighty | 
| Cornish (Kernewek) | oll = all, every, entirely, everything oll termyn = enduring, etermal, everlasting olldalghus = comprehensive, global ollgallos = omnipotence ollgallosek, ollgallojek = almighty ollgemmyn, ollgebmyn = general ollgompassus = holistic ollvys, ollves = universe ollvysel, ollvesel = global, universal | 
| Old Breton (Brethonoc) | oll = everything, everyone | 
| Middle Breton (Brezonec) | holl, hol, oll = everything, everyone | 
| Breton (Brezhoneg) | holl [ɔl] = everything, everyone, completely, totally holl-razh = completely hollad = total hollat = global, total hollbad = perpetual, permanent hollegezh = generality hollegour [ɔˈleːɡur] = generalist hollek [ˈɔlːek] = general, uncountable hollved [ˈɔlvet] = universe | 
Etymology: from Proto-Indo-European *h₂olyos, from *h₂el- (beyond, other) [source]. Words from the same roots include altro (other, another, more, further) in Italian, autre (another) in French, otro (other, another) in Spanish, allur (all, everybody) in Icelandic, al (all, any) in Danish, and all and alter(native) in English [source]
Sources: Wiktionary, Etymological Dictionary Of Proto Celtic, In Dúil Bélrai English – Old Irish glossary, eDIL – Electronic Dictionary of the Irish Language, Teanglann.ie, Am Faclair Beag, An etymological dictionary of the Gaelic language, Fockleyreen: Manx – English Dictionary, Online Manx Dictionary, Gaelg Corpus, Geiriadur Prifysgol Cymru, Lexicon cornu-britannicum : a dictionary of the ancient Celtic language of Cornwall, Gerlyver Kernewek, Devri : Le dictionaire diachronique du breton, Geriafurch, TermOfis