HIGHLY Synonyms: 158 Similar and Opposite Words - Merriam-Webster
https://www.merriam-webster.com/thesaurus/highly
WEBSynonyms for HIGHLY: extremely, very, incredibly, terribly, too, so, badly, severely; Antonyms of HIGHLY: somewhat, slightly, little, nominally, negligibly, just, hardly, minimally
DA: 71 PA: 42 MOZ Rank: 76