On"er*ous (?), a. [L. onerosus, fr. onus, oneris, a load, burden: cf.F.
onéreux.] Burdensome; oppressive. "Too onerous a solicitude." I.
Taylor.
Onerous cause (Scots Law), a good and legal consideration; -- opposed
to gratuitous.
On"er*ous*ly, adv. In an onerous manner.
Ones (?), adv. Once. [Obs.] Chaucer.
One`self" (?), pron. A reflexive form of the indefinite pronoun one.
Commonly writen as two words, one's self.
One's self (or more properly oneself), is quite a modern form. In
Elizabethan English we find a man's self=one's self.
Morris.
One`-sid"ed (?), a. 1. Having one side only, or one side prominent;
hence, limited to one side; partial; unjust; unfair; as, a one-sided
view or statement. "Unguarded and one-sided language." T. Arnold.