Added 10 October 2026 foiling /ˈfɔɪlɪŋ/ noun Categories: ActionsRare Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about foiling at Wordnik → Where our words come from → An act of hindering someone's plans or efforts. Related Words: thwartingfrustrationfrustratingforestallingdisruptingdiscouragingdashingabortingbafflingcircumventionfloutingfooling Back to today's word