Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
guttātim, adv. [gutta], by drops, drop by drop (ante- and post-class.): lacrimae guttatim cadunt, Enn. ap. Non. 116, 1 (Trag. v. 238 Vahl.): pluvia guttatim labitur, Arn. 2, 84; App. M. 3, p. 130: cor guttatim contabescit, Plaut. Merc. 1, 2, 92.