Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

tristor, āri, v. dep. n. [id.], to be sad, grieved, or downcast (very rare): numquam flere, numquam tristari, Sen. Prov. 2, 3; id. Ira, 2, 7, 1.