Verb rompre
The particularity of the verb "rompre" (to break) and its derivatives "rompre" (to break), "corrompre" (to corrupt), "interrompre" (to interrupt) is to take a t following the p in the third person singular of the indicative present: il rompt. The rest of the conjugation is based on the same pattern as -dre verbs like "rendre".
Rompre at indicative present:
je romps
tu romps
il rompt
nous rompons
vous rompez
ils rompent