| Observing 1. (p. pr. & vb. n.) of Observe. 2. (a.) Giving particular attention; habitually attentive to what passes; as, an observing person; an observing mind. Thesaurus Entries agog, alert, all ears, all eyes, assiduous, attentive, aware, careful, concentrated, conscious, diligent, earnest, finical, finicking, finicky, heedful, intense, intent, intentive, meticulous, mindful, nice, niggling, observant, observing, on the ball, on the job, open-eared, open-eyed, openmouthed, regardful, watchful |