Indefinido: Regular Verbs To con jug ate a regular v erb in the “Ind efin ido ”, we just n eed to d ro p the en din gs -ar, -er o r -ir fro m th e in fin itiv e fo rm and add th e endin gs. *Do it for -ir ending regular verb. Indefinido: Irregular Verbs Th ere are quite a few irregu lar v erbs in th is tense. Verb s with an irregu lar root: No te: Traer and Decir d rop the “i” in th e fo rm o f third p erso n plu ral (ellos, ellas , usted es ). W e say “ tra jero n” and “dijero n ”.