from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To mark off; to denote.
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To mark off; to denote.
from The Century Dictionary and Cyclopedia
- To denote; signify.
Latin denotatus ("marked"), past participle of denoto ("I mark, I observe"). (Wiktionary)
You meant the word to denotate someone you think was being irrational, the word very much connotates a female-specific irrationality.