Disambiguate

   
To disambiguate means to remove the ambiguity from; make unambiguous: In order to disambiguate the sentence “She lectured on the famous passenger ship,” you'll have to write either “lectured on board” or “lectured about.”

(Thanks to Dictionary.com for the example.)

Matutinal

   
I am always at my bestv in the matutinal hours.

Matutinal is an adjective meaning pertaining to or occurring in the morning; early in the day. It comes from the Latin matutinalis which meant early or beloning to the morning. Matut was a Goddess of the Dawn.

Matutemia or matutemea is mrning sickness or morning vomiting during pregnancy.