| ravage(noun, verb, adjective, attack, pass) |
| roundup(noun, gain, group, mass, crowd) |
| rout(noun, mass, crowd, lot, throng) |
| run riot(expression, idiom, redundancy) |
| rush together(verb, expression, phrasal verb, move, surge) |
| set(noun, meet, press, group, mass) |
| skein |
| snarl(noun, mess, complication) |
| spill over(verb, expression, phrasal verb) |
| spring(dispense, drizzle, decant) |
| squad(group, crowd, assemblage, cluster, staff) |
| strengthen(verb, advance, increase, reduce, raise) |
| swarm with(verb, phrasal verb, multitude) |
| swell(verb, advance, increase, raise, rise) |
| teeming |
| throng with |
| troupe(noun, set, meet, body, press) |
| accumulation(noun, group, mass, crowd, association) |
| advance(verb, increase, raise, rise, extend) |
| agglomeration(noun, set, group, pack, mess) |