Antrieb [m] (der ~), Beweggrund [m] (der ~), Grund [m] (der ~), Motiv [o] (das ~) {zn.} reason
motive
ground
theme
motivation
angle
motif
Was ist sein Motiv Mord zu begehen?
What's his motive for committing murder?
Es fehlt Tom an Antrieb.
Tom lacks motivation.