Synonyms of uninfected

2 Syllables
healthful, healthy
3 Syllables
hygienic, salubrious, sterile, unsullied, purified
4 Syllables
wholesome, prophylactic, uncreative, sanitized, unprolific, sanitary, sanative, unpolluted
5 Syllables
salutiferous, uninventive
6 Syllables
uncontaminated