Synonyms of fastidiously

2 Syllables
cleanly, neatly, aptly
3 Syllables
orderly, nicely, squeamishly, charily, expertly, adroitly, skillfully, sprucely, adeptly, handily
4 Syllables
carefully, precisely, efficiently, circumspectly, providently
5 Syllables
accurately, methodically, delicately, sensitively