difficult to detect or grasp by the mind or analyze
Academic
GRE
SAT
See subtle in a sentence written about what you actually care about
Brevlex writes every example sentence around your interests, then schedules it with spaced repetition so it sticks. No generic textbook line — a sentence for you.
Each source is a real, checkable word list that contains subtle. We never claim an official exam-board list — none is published for the GRE, GMAT, or SAT.