stubborn (mechanism, stain, habit, behavior)

starr (a) (mechanism)

hartnäckig (a) (stain)

eingefleischt (a) (habit)

verstockt (a) (habit)

starrköpfig (a) (behavior)

eigensinnig (a) (behavior)

störrisch (a) (behavior)

eigenwillig (a) (behavior)

stur (a) (behavior)

dickköpfig (a) (behavior)

entier (a) (behavior)

persistant (a) (stain)

obstiné (a) (behavior)

rebelle (a) [m.] (mechanism)

rebelle (a) [m.] (stain)

entêté (a) [m.] (behavior)

têtu (a) [m.] (behavior)

endurci (a) (habit)

réfractaire (a) (mechanism)

réfractaire (a) (stain)

ostinato (a) [m.] (stain)

ostinato (a) [m.] (behavior)

duro (a) (mechanism)

testardo (a) [m.] (behavior)

cocciuto (a) [m.] (behavior)

caparbio (a) [m.] (behavior)

accanito (a) (behavior)

categorico (a) (behavior)

incallito (a) (habit)

impenitente (a) (habit)

testarudo (a) [m.] (behavior)

obstinado (a) (mechanism)

obstinado (a) (stain)

obstinado (a) (habit)

obstinado (a) (behavior)

terco (a) [m.] (behavior)

cabezón (a) [m.] (behavior)

empedernido (a) (habit)

hardnekkig (a) (stain)

eigenwijs (a) (behavior)

stroef (a) (mechanism)

halsstarrig (a) (behavior)

stijfhoofdig (a) (behavior)

koppig (a) (behavior)

onverzettelijk (a) (behavior)

verstokt (a) (habit)

weerbarstig (a) (mechanism)

stug (a) (mechanism)

besvärlig (a) (mechanism)

envis (a) (stain)

envis (a) (behavior)

tjurskallig (a) (behavior)

ihärdig (a) (behavior)

hårdnackad (a) (behavior)

tvättäkta (a) (habit)

durkdriven (a) (habit)

persistente (a) (stain)

obstinado (a) (behavior)

cabeça-dura (a) [f.] (behavior)

teimoso (a) (stain)

teimoso (a) (behavior)

cabeçudo (informal) (a) (behavior)

inveterado (a) (habit)

emperrado (a) (mechanism)