Antonyms of adj unprepossessing

1 sense of unprepossessing

Sense 1
unprepossessing, unpresentable -- (creating an unfavorable or neutral first impression)

INDIRECT (VIA unattractive) -> attractive -- (pleasing to the eye or mind especially through beauty or charm; "a remarkably attractive young man"; "an attractive personality"; "attractive clothes"; "a book with attractive illustrations")

Similarity of adj unprepossessing

1 sense of unprepossessing

Sense 1
unprepossessing, unpresentable -- (creating an unfavorable or neutral first impression)
       => unattractive (vs. attractive) -- (lacking beauty or charm; "as unattractive as most mining regions")