substituir

Senses

1. 1.

   to replace, to substitute

   to put someone or something in place of another

2. 2.

   to stand in for, to fill in for

   to temporarily take someone's place or role

Examples

• "Vou substituir o açúcar por mel na receita."

  I'm going to replace the sugar with honey in the recipe.

• "Ela vai substituir o professor durante as férias."

  She's going to substitute for the teacher during vacation.

• "Precisamos substituir a bateria do carro urgentemente."

  We need to replace the car battery urgently.

Usage

Regular -ir verb. Commonly used with the preposition "por" (substituir X por Y = replace X with Y). In sports contexts, often means to bring in a substitute player. Don't confuse with "trocar" (to exchange), which implies a more reciprocal swap.