/ Thesaurus / N Synonyms of nicu Find synonyms for: Noun1. neonatal intensive care unit, NICU, intensive care unit, ICUusage: an intensive care unit designed with special equipment to care for premature or seriously ill newbornWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language