trainiert
Trainiert is the past participle of the German verb trainieren and can function as an adjective meaning “trained” or as part of compound tenses. It appears in the perfect tense with the auxiliary haben, as in Ich habe trainiert (I have trained). In the passive voice, trainiert forms with werden: Der Hund wird trainiert (The dog is being trained).
Trainieren is a regular -ieren verb. Its present tense forms are: ich trainiere, du trainierst, er trainiert,
Usage and context: trainiert is common in sports and fitness to describe someone who has completed practice