/ Thesaurus / S Synonyms of system command Find synonyms for: Noun1. system command, direction, instructionusage: a computer user's instruction (not part of a program) that calls for action by the computer's executive programWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: eccentric Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language