STRINGENT Synonyms: 80 Similar and Opposite Words - Merriam-Webster
https://www.merriam-webster.com/thesaurus/stringent
WebSynonyms for STRINGENT: strict, rigorous, rigid, exacting, uncompromising, hard-line, inflexible, steadfast; Antonyms of STRINGENT: lax, flexible, loose, relaxed, slack, compliant, mild, lenient
DA: 63 PA: 40 MOZ Rank: 7