Collocations for trained - adj.

be

highly, superbly
a highly trained army

well
The animals have all been well trained.

fully, properly, rigorously, thoroughly
It is important that staff should be properly trained.

adequately, sufficiently
badly, inadequately, poorly
appropriately, suitably
specially, specifically
formally
academically, medically, professionally
classically
classically trained dancers

militarily
newly
newly trained officers

Trained is used with these nouns:
actor, actress, assassin, counsellor, craftsman, dancer, ear, electrician, elephant, engineer, instructor, interviewer, killer, musician, negotiator, nurse, observer, personnel, physiotherapist, pilot, professional, scientist, social worker, soldier, specialist, staff, technician, therapist, volunteer, warrior, workforce