Here's what rhymes with frustrates.

Consider these alternatives

confuses / abuses annoys / noise infuriates / states disturbs / words motivates / states fascinates / states confounds / sounds irritates / states excites / rights mystifies / size thwarts / towards disappoints / points compels / self intimidates / states astounds / pounds eludes / groups annoy / boy amuses / abuses exasperates / states horrifies / size terrifies / size inspires / miles