"clustered" in the verb sense
1. cluster, constellate, flock, clump
come together as in a cluster or flock
"The poets constellate in this town every summer"
2. bunch, bundle, cluster, clump
gather or cause to gather into a cluster
"She bunched her fingers into a fist"
"clustered" in the adjective sense
1. clustered
growing close together but not in dense mats
2. agglomerate, agglomerated, agglomerative, clustered
clustered together but not coherent
"an agglomerated flower head"
Source: WordNet® (An amazing lexical database of English)
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