Verbs ending in-uar (except for verbs in -cuar that also have regular conjugation forms, verbs that follow the conjugation pattern of averiguar and apropincuar that is regular) follow the conjugation pattern of regular verbs in -ar but have alternation in stem "u" -> "ú" in 1st, 2nd, 3rd pers.sing. and 3rd pers.pl. in imperative, indicative and subjunctive present: actuar / actúa
20 verbs follow this model. Below an extract:
To see other models, refer to Model Table
Based on the ending, you can identify features that different verbs have in common. Click on the verbs above to see their conjugation tables and explore their conjugation patterns.