1. 没有用的：otiatry 耳病治疗学 | otiose 没有用的 | otioseslothful 怠惰的

2. 不必要的：otic 耳的 | otiose 不必要的 | otitis 耳炎

3. otiose

3. 不必要的,多余的：ostrich 鸵鸟,不接受现实的人 | otiose 不必要的,多余的 | outbid 出价多于(他人)

4. 不必要的/怠惰的/没有用的/多余的：otic /耳的/ | otiose /不必要的/怠惰的/没有用的/多余的/ | otitis /耳炎/

1. disinclined to work or exertion

    e.g. faineant kings under whose rule the country languished
           an indolent hanger-on
           too lazy to wash the dishes
           shiftless idle youth
           slothful employees
           the unemployed are not necessarily work-shy

    Synonym: faineantindolentlazyslothfulwork-shy

2. producing no result or effect

    e.g. a futile effort
           the therapy was ineffectual
           an otiose undertaking
           an unavailing attempt

    Synonym: futileineffectualunavailing

3. serving no useful purpose
    having no excuse for being

    e.g. otiose lines in a play
           advice is wasted words
           a pointless remark
           a life essentially purposeless
           senseless violence

    Synonym: pointlesspurposelesssenselesssuperfluouswasted