congregate
verb
[ ˈkɒŋɡrɪɡeɪt ]
• gather into a crowd or mass.
• "some 4,000 demonstrators had congregated at a border point"
Similar:
assemble,
gather,
collect,
come together,
flock together,
get together,
convene,
rally,
rendezvous,
muster,
meet,
amass,
crowd,
cluster,
throng,
group,
foregather,
Origin:
late Middle English: from Latin congregat- ‘collected (into a flock), united’, from the verb congregare, from con- ‘together’ + gregare (from grex, greg- ‘a flock’).