Disagree

1. v. i. To be unsuited; to have unfitness; as, medicine sometimes disagrees with the patient; food often disagrees with the stomach or the taste.
2. v. i. To fail to accord; not to agree; to lack harmony; to differ; to be unlike; to be at variance.
3. v. i. To differ in opinion; to hold discordant views; to be at controversy; to quarrel.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.