WHILE Synonyms: 101 Similar and Opposite Words - Merriam-Webster
https://www.merriam-webster.com/thesaurus/while
WEBSynonyms for WHILE: space, bit, span, day, minute, stretch, spell, moment; Antonyms of WHILE: ease, facility, smoothness, fluency, inertia, inaction, inactivity, idleness.
DA: 37 PA: 77 MOZ Rank: 34