self-obsessed

The word is a modern English compound formed from two distinct elements. The first, 'self', is a fundamental Germanic root with Proto-Indo-European origins related to reflexive pronouns, establishing the object of fixation. The second, 'obsessed', carries a more dramatic history from Latin 'obsidere' (to besiege), a military term literally meaning "to sit opposite to" (from 'ob-' (against) + 'sedere' (to sit)). This evolved metaphorically to describe a mind besieged or haunted by persistent thoughts. When combined, the compound 'self-obsessed' logically extends this metaphor to describe a state where one's own being and image are the persistent, besieging preoccupation, creating a vivid picture of excessive self-focus.

Structure: self (oneself) + obsessed (fixated) self: From Old English 'self', 'seolf', 'sylf', meaning "one's own person". It functions as a prefix denoting reflexivity or focus on the subject. obsessed: From Latin 'obsessus', past participle of 'obsidere' meaning "to besiege". In this compound, it functions as the core adjective meaning "preoccupied or haunted by an idea or feeling".