effective
effectual
efficacious
active
actuating
animating
causal
causative
compelling
compulsive
directive
driving
gripping
holding
impellent
impulsive
in motion
inducive
mobile
motile
motivating
motivational
motive
motor
moving
obsessing
obsessional
obsessive
possessing
preoccupying
pressing
propellant
propelling
propulsive
pulsive
stirring
thrusting
transitional
traveling
urgent