oracular

adj (fml or joc 文或谑) of or like an oracle; with hidden meaning （似）神谕的; 有隐意的: oracular utterances from the headmaster校长的金口玉言.

optics, optimal, optimism, optimist, optimistic, optimistically, optimization, optimize, optimum, option, optional, optometrist, opulence, opulent, opus, or, or else, or rather, or so, oracle, oral, orally, orang-utan, orange, orange squash, orange-blossom, orange-coloured, orangeade, orate, oration, orator, oratorical, oratorio, oratory, orb, orbit, orbital, orch, orchard, orchestra,