Olwynog, a. having wheels
Olynol, a following
Olysgrif, n. a postscript
Oll, a. all, whole, everyone
Ollalluog, a. almighty, omnipotent
Ollalluogrwydd, n. almightiness
Ollddifaol, a. all-consuming
Ollddigonol, a. all-sufficient
Ollddoeth, a. all-wise, all-knowing
Ollgyfoethog, a. all-powerful
Olliach, n. the herb all-heal
Ollnerthedd, n. omnipotency
Ollnerthog, a. omnipotent
Ollryw, a. omnigenous
Ollwybodol, a. omniscient
Om, n. what stretches round
On, n. what is superior; what is in continuity; an ash
Onc, n. what is headlong
Onco, pron. that, that there
Ond, conj. but, only; prep. except. but
Onen, n. an ash, an ash tree
Oni, Onid, adv. not ? conj. if not, unless; except, until
Onidê, conj. otherwise, or else adv. if not so; is it not so?
Onis, conj. if not, unless, except: adv. not?
Onwydd, n. ash trees
Or, n. a limit; margin, brim: conj. if
Orch, n. a limit; rim
Oriad, n. a puffing, a panting
Oriadur, n. a time-piece, watch
Oriain, v. to puff, to pant: n. utterance; panting
Oriog, a. having fits, fickle
Oriol, a. belonging to the hour
Oriawr, n. time-piece, watch
Oriel, n. a porch, gallery
Orig, n. a little while; adv. now, at present
Origyn, n. a short space
Orlais, n. a time-piece, clock
Orn, n. a start; push; threat
Ornedigaeth, n. a threatening
Ornedd, n. a threatening state
Ornest, n. tilting, combat, duel
Ornestfa, n. place of combat
Ornestiad, n. a combating
Ornestu, v. to combat, to duel
Ornestwr, n. dueller
Orni, v. to start, to threaten
Oroï, v. to utter; to be uttering
Oroïan, n. a jubilation; joy: v. to shout in triumph
Os, conj, if
Osai, n. sweet juice; cyder
Osg, n. what tends out or from
Osged, n. a laver, a bason
Osgl, n. a branch; a twig
Osglen, n. a branch; a twig
Osgli, v. to branch; to shoot
Osgliad, n. a branching out
Osglod, n. a ramification
Osglog, a. branchy, branching
Osgo, n. obliquity, slope
Osgoad, n. a starting aside
Osgöedd, n. obliquity; starting
Osgöi, v. to go aslant; to start
Osgoilyd, a. apt to start aside
Osgyd, n. a laver, a bason
Osiad, n. a making an essay
Osio, v. to offer to do, to essay
Ostid, n. epithet for a shield
Ostl, n. an open place; inn
Ostr, n. what is spread
Ostri, n. display, hospitality
Oswydd, n. war-horses; cavalry
Ow, n. a breathing out; a moan
Pa, n. what is in continuity: a. what
Pab, n. a father; a pope
Pabaidd, a. papal; popish
Pabell, n. tent; tabernacle
Pabelliad, n. a fixing a tent
Pabellu, v. to pitch a tent
Pabi, n. the poppy
Pabïol, a. papaverous
