tenable
[adjective]
Synonyms: sound, arguable, believable, defensible, justifiable, plausible, rational, reasonable, viable

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Antonyms: untenable
Contrasted words: insecure, vulnerable, defenseless, helpless, unprotected, dangerous, precarious, risky, indefensible, inexcusable, unbelievable, unjustifiable
Related Words: impregnable, secure, believable, credible, maintainable, plausible

[TahlilGaran] English Synonym Dictionary ▲

ten‧a‧ble /ˈtenəbəl/ adjective
[Date: 1500-1600; Language: French; Origin: tenir; ⇒ tenant]
a belief, argument etc that is tenable is reasonable and can be defended successfully:
an idea which is no longer tenable

[TahlilGaran] Dictionary of Contemporary English ▲