ombusman - n. (pl. -men) an official appointed by a government to investigate individuals'...

omly - adv., adj., & conj. 1 solely, merely, exclusively; and no one ...

omnibus - n. & adj. 1 formal = BUS. 2 a volume containing several novels etc. previously published...

omce - adv., conj., & n. 1 on one occasion or for one time only (did not once