[noun] a group of persons together in one place Synonyms:assemblage
[noun] the social act of assembling; "they demanded the right of assembly" Synonyms:assembly, assemblage
[noun] the act of gathering something Synonyms:gather
[noun] sewing consisting of small folds or puckers made by pulling tight a thread in a line of stitching Synonyms:gather
[adjective] accumulating and becoming more intense; "the deepening gloom"; "felt a deepening love"; "the gathering darkness"; "the thickening dusk" Synonyms:deepening, thickening