adj.
Pronunciation: ( ˌ )in- ' sü-p( ə -)r ə -b ə l
Function: adjective
Etymology: Middle English, from Latin insuperabilis, from in- + superare to surmount, from super over ― more at OVER
Date: 14th century
: incapable of being surmounted, overcome, passed over, or solved < insuperable difficulties>
– in · su · per · a · bly \ -bl ē \ adverb