an observable event or occurrence
Scientists studied the phenomenon of aurora borealis lights.
Vocabulary like phenomenon 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.
continuing firmly despite difficulty
keenly insightful
relevant to the matter
examine; examine or consider with attention and in detail
far reaching; spreading or spread throughout
stubbornly resistant; marked by a disposition to oppose and contradict
having a negative outlook; the feeling that things will turn out badly
sulky; easily irritated or annoyed
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