| 单词 | unfounded |
| 例句 | unfounded adjective •unfounded speculation:groundless, baseless, unsubstantiated, unproven, unsupported, uncorroborated, unconfirmed, unverified, unattested, unjustified, without basis, without foundation | specious, speculative, conjectural, idle | false, untrue. ANT proven. |
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