The verb hacer means "to do" or "to make" in Spanish. It is an irregular verb, which means its conjugation does not follow standard patterns. In the present tense, the conjugation is: yo hago, tú haces, él/ella/usted hace, nosotros/nosotras hacemos, and ellos/ellas/ustedes hacen. In the past tense, hacer is conjugated as: yo hice, tú hiciste, él/ella/usted hizo, nosotros/nosotras hicimos, and ellos/ellas/ustedes hicieron. Understanding these forms is essential for effective communication in Spanish, as hacer is commonly used in everyday conversations.