sex·ol·o·gy 
(sĕk-sŏlə-jē)
(sĕk-sŏlə-jē)n.
The study of human sexual behavior.
sex′o·logic (sĕk′sə-lŏjĭk), sex′o·logi·cal (-ĭ-kəl) adj.
sex·olo·gist n.
- impermissible
- impermissibly
- impersonal
- impersonality
- impersonalization
- impersonalize
- impersonally
- impersonate
- impersonation
- impersonator
- impertinence
- impertinency
- impertinent
- impertinently
- imperturbability
- imperturbable
- imperturbableness
- imperturbably
- impervious
- imperviously
- imperviousness
- impetigenous
- impetigo
- impetuosity
- impetuous