Disinclined, indisposed, hesitant, reluctant, loath, averse mean manifesting neither the will nor the desire to do or to have anything to do with something indicated or understood.
Disinclined implies a lack of taste or inclination for something for which one has no natural bent or which meets one’s disapproval.
Indisposed implies an unfavorable or often a hostile or unsympathetic attitude.
Hesitant suggests a holding back through fear, distaste, uncertainty, or irresolution.
Reluctant adds to hesitant a definite resistance or sense of unwillingness.
Loath stresses the lack of harmony between something one anticipates doing and his likes or dislikes, tastes or distastes, or sympathies or antipathies; thus, a tender person may be loath to punish a refractory child but a strict disciplinarian would be loath to allow that child to go unpunished; one may be loath to believe a well-founded report that discredits a friend and equally loath to disbelieve a rumor that confirms his bad opinion of a person.