Pretensionless means modest or free from any desire to impress or show off. Its antonyms, on the other hand, refer to a person who lacks humility and has an extravagant or inflated sense of self-importance. Some antonyms of pretensionless include conceited, pretentious, ostentatious, showy, pompous, grandiose, and egotistical. These words indicate an individual who is excessively self-centered and believes they are superior to others. Such people often exaggerate their skills or accomplishments to gain attention or admiration from others. Therefore, it is always humble and courteous to be pretensionless rather than boasting or showing off.