obhlaire m4   (Hist.) a kind of base bard (daorbhard); a poet (file) of the lowest grade; clown, buffoon

ócáid f2   occasion

ócáideach a   occasional

ochlán m1   lamentation, lamentatio (la)

ochtábhó m4   octavo

ochtmhéadar m1   octameter

ochtmhéadrach a   octametrical

ochtsiollach m1   octosyllable

ochtsiollach a   octosyllabic

ocsamórón m1   oxymoron

odaisé f4   odyssey

oghamchraobh f2   ogham alphabet

ógláchas m1   meadaracht shiollach scaoilte [loose syllabic metre]

oibiacht f3   object

oibiachtaigh v   objectify

oibiachtú m   objectification

oibiachtúil a   objective

oibiachtúlacht f3   objectivity

óid f2   ode

oideolaíocht f3   pedagogy

oidhe f4   violent death; (Hist.) violent death tale

oiliúint f3   training

ointeolaíoch a   ontological

ointeolaíocht f3   ontology

oireas m1   (Hist.) chronicle, record, knowledge of events; historical information, history

oirfide m4   minstrelsy, music; entertainment

oirfideach m1   minstrel, musician; performer, player

oiriseach m1   (Hist.) chronicler, narrator of events

oiriúnach a   suitable, fitting,  appropriate, correct

oirthearachas m1   orientalism

oirthearach a   orientalist

olagón m1   (act of) wailing; wail; dirge, lament

olagónach a   wailing, lamenting

ollamh m1   (Hist.) master-poet, the highest grade of poet; professor

ollamh m1 flatha   (Hist.) chief’s poet

ollamh m1 seanchais, le seanchas   (Hist.) chief historian

ollchultúr m1   mass culture

olleagrán m1   omnibus edition

ollinsint f2   master narrative, grand narrative

ollsochaí f4   mass society

onamataipé f4   onomatopoeia

onamataipéach a   onomatopoeic

opera   opera (it)

opera grinn   comic opera (it)

óráid f2   oration, speech

óráidí m4   orator

óráidíocht f3   oratory

ord m1   order

ord m1 aibítre   alphabetical order

ord m1 aimsire   chronology

ord m1 na bhfocal   word order

ord m1 oirchilleach   anticipatory order

ord m1 paiseanta   passionate order

ord m1 réalta, an t-   real order, the

ord m1 samhailteach, an t-   imaginary order, the

ord m1 séimeolaíoch, an t-   semiotic order, the

ord m1 siombalach, an t-   symbolic order, the

ordaitheach a   prescriptive, imperative

ordlathach a   hierarchical

ordlathú m   hierarchization

orgánach a   organic

ornáid f2   ornament

ornáideach a   ornamental, ornate, embellished

ornáideachas m1   ornamentation

ortadocsach a   orthodox

ortadocsacht f3   orthodoxy

ortagrafaíocht f3   orthography

ortagrafach a   orthographic

ortha f4   prayer; incantation, spell, charm

orthaí fpl cosanta   protective incantations

oscailt f2 phléascach   explosive opening

os-mhise m4   super-ego

osnádúrtha a   supernatural

osréalachas m1   surrealism

osréalaí m4   surrealist

osréalaíoch a   surrealist