felicitous -
exhibiting an agreeably appropriate manner or style; "a felicitous speaker"
infelicitous not appropriate in application; defective; "an infelicitous remark"; "infelicitous phrasing"; "the infelicitous typesetting was due to illegible copy"
happy well expressed and to the point; "a happy turn of phrase"; "a few well-chosen words"
felicitousness,
felicity pleasing and appropriate manner or style (especially manner or style of expression)
congratulatory,
gratulatory expressive of sympathetic pleasure or joy on account of someone's success or good fortune; "a congratulatory telegram"; "the usual congratulatory crowd was conspicuously absent"; "a gratulatory address"
well-chosen,
happy well expressed and to the point; "a happy turn of phrase"; "a few well-chosen words"
well-turned (of language) aptly and pleasingly expressed; "a well-turned phrase"
felicitous -
marked by good fortune; "a felicitous life"; "a happy outcome"
