Added 9 October 2026 secretiveness noun Categories: Describing WordsRare Words noun ! Definition from WordNet 3.1, Princeton University. More about secretiveness at Wordnik → Where our words come from → Characterized by a lack of openness (especially about one's actions or purposes). The trait of keeping things secret. Related Words: secrecysilenceclosenessconfidentialityunsecretivenesssurreptitiousnesssneakinesssecretabilitydiscreetnesssecretnessseclusivenesssupersecrecy Back to today's word