The word 癖好 is formed by combining 癖, composed of the radical 疒 indicating illness and the phonetic component 辟, conveying a morbid or compulsive habit, with 好, composed of 女 and 子 and here pronounced hào to denote a strong liking or preference. Together, these characters semantically merge to express the concept of a deep-seated personal interest or habitual fondness for something.