Added 9 October 2026 retentiveness noun Categories: Mind & IdeasDescribing WordsObscure Words noun ! Definition from WordNet 3.1, Princeton University. More about retentiveness at Wordnik → Where our words come from → The power of retaining and recalling past experience. he had a good memory when he was younger The property of retaining possessions that have been acquired. The power of retaining liquid. moisture retentivity of soil Related Words: retentionretentivitymemoryirretentivenessanal-retentivenessirretentionreticencyrestrictivenessretainabilityirreticencereticensereticence Back to today's word