maîtrisais
Maitrisais is a French term that translates to "mastered" or "was mastering" in English, depending on the context. It is the imperfect tense conjugation of the verb "maîtriser," which means to master, control, or dominate.
The imperfect tense in French is used to describe ongoing actions, habitual actions, or states of being
Alternatively, "maîtrisais" can also describe a state of having control over something in the past. "Il maîtrisais