not by much

barely comparatively practically rarely seldom simply somewhat

just

almost inconceivably almost not by a hair by no means detectably faintly gradually imperceptibly infrequently little no more than no way not a bit not at all not likely not markedly not measurably not much not notably not noticeably not often not quite once in a blue moon only only just perceptibly pretty near scantly slightly sparsely sporadically with trouble

frequently

very