Alarming rhymes with:
arming, charming, disarming, farming, harming, rearming, arming, barnstorming, brainstorming, charming, conforming, disarming, farming, forming, harming, heartwarming, informing, misinforming, nonperforming, norming, outperforming, performing, rearming, reforming, storming, swarming, transforming, underperforming, warming
Alarming sounds like:
ailerons, alarm's, alarms, alluring