kilter UK /ˈkɪltə/US /ˈkɪltɚ/noun 2forms 1phrases 2 noun2 •Chiefly in out of kilter: (good) condition, form, or order; fettle. •A hand of playing cards which is useless. formskilters Phrases with kilter off-kilterAskew. out of kilterAskew, disturbed; not adjusted or working properly; out of order.