Portuguese Verb Conjugation - Conjugations

Conjugations

Regular verbs belong to one of three conjugation classes, distinguished by the ending of their infinitive forms (which is also their citation form):

• Those whose infinitive ends in -ar belong to the first conjugation (e.g. lavar, matar, ladrar);
• Those whose infinitive ends in -er belong to the second conjugation (e.g. correr, comer, colher);
• Those whose infinitive ends in -ir belong to the third conjugation (e.g. partir, destruir, urdir);

The verb pôr is conventionally placed in the second conjugation by many authors, since it is derived from Old Portuguese poer (Latin ponere). In any event, this is an irregular verb whose conjugation must be learned on its own. Other verbs with infinitives ending in -or, such as depor, compor, and propor are derivatives of pôr, and are conjugated in the same way.