otiose

adj (fml 文) (of language, ideas, etc) serving no useful purpose; unnecessary （指语言、 想法等）无用的, 多余的: long, otiose passages of description 冗长而多余的描写段落.

ostensibly, ostentation, ostentatious, ostentatiously, osteo-arthritis, osteopath, osteopathy, ostler, ostracism, ostracize, ostracize, ostracise, ostrich, OT, other, other from, other than, other-directed, other-worldly, others, otherwise, otter, ottoman, OU, oubliette, ouch, ought, ought to, Ouija, ounce, our, ours, ourselves, oust, out, out of, out of breath, out of control, out of danger, out of date, out of debt,