Sluggish
Sluggish (adj) /ˈslʌg.ɪʃ/
moving or operating more slowly than usual and with less energy or power, lethargic, slow, inactive, lifeless, slothful:
The company performance is sluggish and inefficient this year because of bad financial conditions.
The football player seems sluggish after being rehabilitated from his injured leg.
Needless to say, sluggish people have a marked tendency for procrastination.
A heavy lunch makes me sluggish in the afternoon.
Something is wrong with the car – the engine feels a bit sluggish.