Regular verbs
Irregular verbs
Some conjugated verbs are irregular due to a stem-change from ‘e’ to ‘ie’ or ‘o’ to ‘ue’ or ‘e’ to ‘i’ or ‘u’ to ‘ue':
Verbs that change from “e” to “ie” when conjugated
Verbs that change from ‘o’ to ‘ue’ when conjugated
Verbs that change from “e” to “i” when conjugated
Verbs that change from “u” to “ue” when conjugated
Some conjugated verbs are required to be irregular to keep the proper pronunciation as there are hard and soft c’s and g’s:
Verbs that change from “c” to “qu” when conjugated
Verbs that change from “c” to “zc” when conjugated
Verbs that change from “g” to “gu” when conjugated
Verbs that change from ‘g’ to ‘j’ when conjugated
Verbs that change from “z” to “c” when conjugated
Verbs that change from “c” to “z” when conjugated
Verbs that end with “guar”: gu changes to gü in yo preterite, in present subjunctives and in commands (except tú affirmative). Example: averiguar – averigüé (yo preterite).
Some conjugated verbs are irregular to maintain proper stress with written accent mark:
Verbs that change from ‘i’ to ‘í’ when conjugated
Verbs that change from ‘u’ to ‘ú’ when conjugated
Some conjugated verbs are just irregular:
‘Yo’ present indicative ‘go’ ending verbs
‘Yo’ present indicative ‘oy’ ending verbs
Verbs that change from “u” to “uy” and ‘i’ to ‘y’ when conjugated
Some verbs are almost regular – only a few irregular forms:
Only Past Participle is irregular
Most of the verb conjugations including English translation used in this website are based on Fred Jehle’s Spanish Verb Database which was compiled by Brian Ghidinelli.
http://www.ghidinelli.com/free-spanish-conjugated-verb-database