Added 9 October 2026 decommission /diːkəˈmɪʃən/ verb Categories: Money & PropertyObscure Words verb ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about decommission at Wordnik → Where our words come from → Withdraw from active service. The warship was decommissioned in 1998 Related Words: deactivationremovedisbanddisbandmentdislodgedisbandingdeactivateshutdeclassificationwithdrawingwithdrawdismantling Back to today's word