adj. 1. Requiring much effort or attention: exhausted by a demanding job.

Is demandingly a adverb?

adverb. 'Her sister replied demandingly, 'Well do a better job.

What do you call a person who is demanding?

Main Entry: hard-to-please

Part of Speech: adjective. Definition: extremely particular. Synonyms: choosy, critical, demanding, detailed, finicky, fussy, meticulous, nit-picking, particular, picky, scrutinizing Antonyms: undemanding.