| 单词 | doubtful |
| 例句 | doubtful adjective 1.•I was doubtful about going:irresolute, hesitant, vacillating, dithering, wavering, in doubt, unsure, uncertain, of two minds, shilly-shallying, undecided, in a quandary, in a dilemma, blowing hot and cold. ANT confident, decisive. 2.•at this point, the verdict is still doubtful:in doubt, uncertain, open to question, unsure, unconfirmed, not definite, unknown, undecided, unresolved, debatable, in the balance, up in the air | informal iffy. ANT certain. 3.•the whole trip is looking rather doubtful:unlikely, improbable, dubious, impossible. ANT probable. 4.•they are doubtful of the methods used:distrustful, mistrustful, suspicious, wary, chary, leery, apprehensive | skeptical, unsure, ambivalent, dubious, cynical | informal trepidatious. ANT trusting. 5.•this decision is of doubtful validity:questionable, arguable, debatable, controversial, contentious | informal iffy. ANT sound. |
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