Countermeasure rhymes with:
arbitrager, arbitrageur, azure, closure, colclasure, composure, crozier, disclosure, displeasure, enclosure, exposure, foreclosure, fraiser, fraizer, frasier, frasure, frazier, hoosier, inclosure, lasure, leasure, leisure, losure, massager, measure, mosher, mosier, overexposure, pleasure, seizure, treasure