Synonyms of independently

2 Syllables
freely, apart, solo, singly
3 Syllables
disjointly, unaided
4 Syllables
apurpose, meaningfully, discretely, severally, restrictedly
5 Syllables
individually, separately, intrinsically, subjectively, distinctively, autonomously, unrestrictedly, unsupervised
6 Syllables
deliberately, egocentrically