Synonyms of slightly

2 Syllables
partly, subtly, thinly, lightly, rather, hardly, faintly, scantly, pretty
3 Syllables
flippantly, leniently, tenuously, thoughtlessly, timidly, heedlessly, slightingly, passably, somewhat, sparsely, airily, breezily, daintily, scarcely, sparingly, bearably
4 Syllables
ethereally, frivolously, tolerably, detectably, impalpably, agilely, measurably, marginally
5 Syllables
unsubstantially, averagely, imperceptibly, inappreciably, moderately
6 Syllables
inconsiderably, insignificantly