absurd; lacking in harmony or compatibility or appropriateness
His cheerful behavior was incongruous with the somber situation.
Vocabulary like incongruous 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.
minor and not essential
beginning; only partly in existence; imperfectly formed
penetrating; having or demonstrating ability to recognize or draw fine distinctions
prompt; give an incentive for action
slope; have a tendency or disposition to do or be something; be inclined
including; including much or everything and stated limits
disconnected; without logical or meaningful connection
incompatibility; the quality of disagreeing; being unsuitable and inappropriate