tenuous /ˈtɛnjəwəs/ adjective Learner's definition of TENUOUS
[more tenuous; most tenuous]
1
: not certain, definite, or strong : flimsy, weak, or uncertain不确定的；脆弱的；含糊的 -
He has a tenuous grasp/grip/hold on reality.他对现实不甚了解。
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a tenuous hypothesis/relationship模棱两可的假设；不确定的关系
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The local theater has had a tenuous existence in recent years.这家当地剧院近年来经营惨淡。
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He could demonstrate only a tenuous claim to ownership.对于所有权，他拿出的证据根本站不住脚。
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The connection between his absence and the robbery is tenuous [=shaky] at best.他的不在场和抢劫之间最多也就是有点联系。
2
literary : very thin纤细的；单薄的