Added 9 October 2026 rigorously adverb Categories: Describing WordsRare Words adverb ! Definition from Wiktionary (CC BY-SA). More about rigorously at Wordnik → Where our words come from → In a rigorous manner. Related Words: strictlyscrupulouslyfirmlymeticulouslydiligentlyexhaustivelyconscientiouslyresolutelyroundlystringentlythoroughlystringent Back to today's word