irascible - ANSWER ✔✔bad tempered
acquiesce - ANSWER ✔✔agree or submit (consentir)
rebuke - ANSWER ✔✔reprimand; harsh criticism (reprimenda)
trepidation - ANSWER ✔✔apprehension, anxiety (inquietud)
insurgent - ANSWER ✔✔rebel
ironic - ANSWER ✔✔contradictory, unexpected
clandestine - ANSWER ✔✔secret
vernacular - ANSWER ✔✔native, colloquial