DIVISION (I.) FORMATION OF IDEAS
Section II. PRECURSORY CONDITIONS AND OPERATIONS
Attention –N. mindfulness; intentness, thought; advertency; observance, observation; consideration, reflection, perpension; heed; particularity; notice, regard; circumspection (care); study, scrutiny, once-over, inspection, introspection; revision; minuteness, attention to detail. absorption of mind (abstraction). indication, calling attention to.
Inattention. –N. inconsideration; oversight; inadvertence, non-observance, disregard. supineness (inactivity); want of thought; heedlessness (neglect); insouciance (indifference). abstraction; absence of mind; preoccupation, distraction, reverie, brown study, deep musing, fit of abstraction, woolgathering.
Thesaurus of Words and Phrases by Peter Mark Roget, M.D., F.R.S. Enlarged by John Lewis Roget, M.A., New Edition Revised and Enlarged by Samuel Romily Roget, M.A. Published by Grosset & Dunlap, the edition is copyright 1941, 1947.