Subtle
Fine
Synonyms: Fine, ultra-fine, overnice, precise, tenuous, indistinct, elusive, minuscule, fine-drawn, nice, minute, narrow, hair-splitting, indefinite, and abstruse.
Understated
Synonyms: Understated, muted, subdued, faint, soft, indefinite, washed out, low-key, toned down, delicate, pale, indistinct, and vague.
Astute
Synonyms: Astute, quick, acute, razor-like, rapier-like, shrewd, perceptive, sensitive, penetrating, wise, intelligent, artful, percipient, on the ball, politic, keen, fine, sharp, razor-sharp, canny, aware, discerning, discriminating, sagacious, clever, skilful, sapient, perspicacious, and savvy.
Ingenious
Example Sentences
"She made a subtle suggestion.
" "His smile had a subtle meaning.
" "The flavor is very subtle.
" "There was a subtle change.
