CONCERN Synonyms: 233 Similar and Opposite Words - Merriam-Webster
https://www.merriam-webster.com/thesaurus/concern
WEBSynonyms for CONCERN: interest, company, firm, house, business, enterprise, corporation, establishment; Antonyms of CONCERN: unconcern, ease, content, peace, contentment, tranquillity, calm, quiet.
DA: 82 PA: 33 MOZ Rank: 9