<p><strong>Adjective:</strong></p><ul><li>Lacking a sound basis, as reasoning; unsubstantiated; weak; for example, "a tenuous argument."</li><li>Of slight importance or significance; for example, "He holds a rather tenuous position in history."</li><li>Lacking in clarity; vague; for example, "He gave a rather tenuous account of his past life."</li><li>Thin or slender in form, as a thread.</li><li>Thin in consistency; rare or rarefied.</li></ul><p><strong>Synonyms:</strong></p><ul><li>Trifling</li><li>Trivial</li><li>Insignificant</li><li>Attenuated</li></ul><p><strong>Antonyms:</strong></p><ul><li>Substantial</li><li>Important</li><li>Thick</li></ul>