selfishly

the adverb 'selfishly' is built upon the old english noun 'self', which has germanic origins tracing back to the proto-indo-european root selbʰ-, meaning 'one's own'. the adjective-forming suffix '-ish' was attached to create 'selfish', a term that emerged in the 17th century to describe a character excessively focused on one's own interests. finally, the old english adverbial suffix '-ly' was appended, converting the adjective into an adverb that specifies the manner of an action. thus, the word's literal construction—'in the manner of having the quality of one's own self'—logically evolved to describe acting with a primary concern for personal advantage.

Structure: self (own) + ish (having the quality of) + ly (in a manner of) self: from old english 'self', meaning 'own, same'. functions as the core noun root denoting the individual. ish: from old english '-isc', an adjective-forming suffix meaning 'of the nature of, belonging to'. functions as a suffix to form adjectives from nouns. ly: from old english '-līce', an adverb-forming suffix meaning 'in a manner of, having the qualities of'. functions as a suffix to form adverbs from adjectives.