American English

Definition of unassailable adjective from the Oxford Advanced American Dictionary

 

unassailable

 adjective
adjective
NAmE//ˌʌnəˈseɪləbl//
 
(formal)
 
jump to other results
that cannot be destroyed, defeated, or questioned The party now has an unassailable lead. Their ten-point lead puts the team in an almost unassailable position. She replied with what she thought was unassailable logic.
See the Oxford Advanced Learner's Dictionary entry: unassailable