Added 10 October 2026 slowing /ˈslaː.ɪn/ noun Categories: Describing WordsUncommon Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about slowing at Wordnik → Where our words come from → A decrease in rate of change. the deceleration of the arms race Related Words: decelerationretardationslowdownslackeningretardinghamperingsetbackdecreaseslacklagdiminishingabating Back to today's word