/ Thesaurus / S Synonyms of supervisor call instruction Find synonyms for: Noun1. system call, supervisor call instruction, callusage: an instruction that interrupts the program being executed and passes control to the supervisorWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language