tenable
Tenable (adjective) means Able to be defended against criticism or objection; reasonable enough to hold as a position. Example: “After the new evidence emerged, his theory was no longer tenable.”
How to use tenable
Learner’s notesIn plain EnglishAble to be defended or reasonably believed.
Formal, common in academic, legal and journalistic writing. The negative untenable is far more frequently used than the positive.
Tenable is about whether an argument can be defended; tenuous is about whether it is weak or flimsy. They are near opposites, not variants.
Trace the full origin ↓Fill the gap
Can you complete this real example?
After the new evidence emerged, his theory was no longer _____.
Etymology
From French tenable, from tenir 'to hold', from Latin tenere 'to hold'.