Constraining rhymes with:
restraining, straining, overtraining, restraining, retraining, straining, training, draining, overtraining, raining, refraining, reigning, reining, restraining, retraining, straining, training
restraining, straining, overtraining, restraining, retraining, straining, training, draining, overtraining, raining, refraining, reigning, reining, restraining, retraining, straining, training