na-adjective
mechanical; automatic; unthinking
Describes actions, processes, or behavior that are done without thought, like a machine. Can be neutral or slightly negative when applied to people.
彼の返事は機械的で、心がこもっていなかった。
His reply was mechanical and lacked sincerity.
工場では機械的な作業をロボットが行
In the factory, robots perform mechanical tasks.
Compound of 機械 (machine) + 的 (-like, adjectival suffix).