変てこ

Etymology
Compound of.

The latter element teko is sometimes spelled in kanji as. However, considering the existence of synonyms with similar phonetics where the latter element is purely used for phonetic effect, the teko here is likely of similar derivation. Consider the second half of 🇨🇬, used for phonetic effect.

First attested in a text from 1776.

Adjective

 * 1) odd, absurd

Noun

 * 1) weirdness, something strange