ridiculous; incongruous; inviting ridicule
His preposterous claim that he could fly like a bird amused everyone.
Vocabulary like preposterous 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.
a strong preference
common; most frequent or common
leading; greatest in importance or degree or significance or achievement
seize precedence; acquire for oneself before others can do so
high priest; a senior clergyman and dignitary
prior; denoting an action or event preceding or in preparation for something more important
basis; a statement that is assumed to be true and from which a conclusion can be drawn
forewarning; a feeling of evil to come