To have the same opinion as someone else; concur. I agree with your assessment of the problem.
To reach a decision or arrangement, typically after discussion. The two companies agreed on the terms of the merger.
To be consistent with or match something. The results of the experiment agree with the initial hypothesis.
To consent to do something that has been suggested by another person. She agreed to help him with his homework.
To be suitable or pleasant for someone; to have a good effect on a person's health, feelings, or constitution. Spicy food never agrees with her.
To correspond grammatically in number, gender, or person with another word. In Spanish, adjectives must agree in gender and number with the nouns they modify.