Creep

alimaña

(informal: annoyingly unpleasant person)

anormal

(informal: annoyingly unpleasant person)

deformación por fluencia lenta

(gradual deformation of material under stress)

degenerado

(informal: annoyingly unpleasant person)

depravado

(informal: annoyingly unpleasant person)

desgraciado

(informal: annoyingly unpleasant person)

fatiga

(gradual deformation of material under stress)

pervertido

(informal: annoyingly unpleasant person)

rarito

(informal: annoyingly unpleasant person)

hormiguear

(to have a sensation as of insects creeping on the skin)

reptar

(to grow across a surface rather than upwards)