Here's what rhymes with contributes.

Consider these alternatives

contribute / tribute contributing / distributing generates / states reduces / uses produces / uses relies / size employs / boys contributed / tributed facilitates / states creates / states contribution / solution reducing / producing decrease / increase participates / states varies / missionaries indirectly / directly absorbs / towards owes / those underpins / since decreased / least furthermore / more increasing / leaving characterizes / prices earns / terms affect / effect increased / least decreases / increases provides / rights concentrates / states emphasizes / prices degradation / operation