emotionally detached

the students were oddly disengaged, as if they didn't believe they could control their lives

separate or release (someone or something) from something to which they are attached or connected

I disengaged his hand from mine

they clung together for a moment, then she disengaged herself

remove (troops) from an area of conflict

the ceasefire gave the commanders a chance to disengage their forces

plans were already afoot for the Americans to disengage from the city

pass the point of one's sword over or under the opponent's sword to change the line of attack