Among the guests was an impressive array of authors and critics.
the remains of an impressive Roman villa
The latest version has an impressively user-friendly interface.
—impressiveness noun [uncountable]WORD FOCUS: good
very good: excellent, fantastic, wonderful, great, terrific, neat American English, superb, amazing, outstanding, brilliant, impressive, fine, first-class, out of this world
of good quality: high quality, top quality, superior, deluxe, classy
morally good: decent, virtuous, respectable, honourable British English/honorable American English, upright, beyond reproach
➔ See also good