ten ‧ a ‧ ble /ˈtenəb ə l/ BrE AmE 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
ten ‧ a ‧ ble /ˈtenəb ə l/ BrE AmE 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
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012