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Searching for synonyms for rigorous? Here’s some similar words from our thesaurus you can use instead.
rigorous as in rigidly accurate
  • "allowing no deviation from a standard"
  • "rigorous application of the law"
  • "a strict vegetarian"


  • strict rigidly accurate; (of rules) stringently enforced; characterized by strictness, severity, or restraint ; incapable of compromise or flexibility ; severe and unremitting in making demands
rigorous as in demanding strict attention to rules and procedures
  • "rigorous discipline"
  • "tight security"
  • "stringent safety measures"


  • stringent demanding strict attention to rules and procedures
  • tight firmly or closely; in an attentive manner; closely constrained or constricted or constricting; pulled or drawn tight; set so close together as to be invulnerable to penetration; pressed tightly together; (used of persons or behavior) characterized by or indicative of lack of generosity; affected by scarcity and expensive to borrow; of such close construction as to be impermeable; of textiles; securely or solidly fixed in place; (of a contest or contestants) evenly matched; very drunk ; exasperatingly difficult to handle or circumvent; demanding strict attention to rules and procedures; packed closely together

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