The irascible old man complained about everything constantly.
Synonyms for irascible
angry
irritable
choleric
Antonyms for irascible
calm
patient
serene
Practice irascible on real SAT questions
Vocabulary like irascible appears on the Digital SAT in Words-in-Context questions, where you choose the word that fits a passage's meaning and tone. You can also drill this word with vocabulary flashcards.