2
flocking
2
fruitful(adjective, abundant, flush, copious, productive)
2
hosting
2
infested
2
massing
2
mobbing
2
multitudinous(adjective, common, dense, extensive, profuse)
2
numerous(adjective, common, dense, extensive, profuse)
2
overcrowded
2
overpopulated
2
packing
2
pregnant
2
riotous(adjective, extreme, extravagant, abundant, excessive)
2
shoaling
2
sumptuous(adjective, extreme, extravagant, abundant, excessive)
2
thick with
2
trooping
1
SRO(full, busy, loaded, teeming, packed)
1
alive with
1
amassed
11 years ago|10k views|share |citing 
APASmart Define. (2015). swarming thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/swarming/thesaurus/synonyms
ChicagoSmart Define. 2015. "swarming thesaurus" https://smartdefine.org/swarming/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, swarming thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/swarming/thesaurus/synonyms>.
MLASmart Define. "swarming thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/swarming/thesaurus/synonyms>