CHALLENGES Synonyms: 170 Similar and Opposite Words - Merriam-Webster
https://www.merriam-webster.com/thesaurus/challenges
WebSynonyms for CHALLENGES: objections, exceptions, complaints, questions, difficulties, protests, criticisms, demurrers; Antonyms of CHALLENGES: sanctions, approvals, agreements, acceptances, assents, acquiescences, compliances, obediences
DA: 80 PA: 37 MOZ Rank: 89