J'attendrai
Here's a breakdown:
* J' is the contraction of "je" (I)
* attendrai is the future tense of the verb "attendre" (to wait)
Here are some examples:
* J'attendrai ton appel. (I will wait for your call.)
* J'attendrai le bus. (I will wait for the bus.)
* J'attendrai que tu sois prêt. (I will wait for you to be ready.)
You can also use "je vais attendre" for a more informal and immediate sense of waiting.
* Je vais attendre ton appel. (I'm going to wait for your call.)
* Je vais attendre le bus. (I'm going to wait for the bus.)
Choose the expression that best suits the context and the level of formality.