maîtrisais
/mɛ.tʁi.zɛ/maîtriser
1.
verbInd1stImperfectSing1, 2
was good at
had mastered
knew how to do
À l'époque, je maîtrisais bien l'espagnol.
Back then, I was really good at Spanish.
2.
verbInd1stImperfectSing1, 2
had (something) under control
was controlling / was restraining
Tu maîtrisais la situation avant qu'il n'arrive.
You had the situation under control before he arrived.
