先天的
せんてんてき · sententeki · JLPT N1 · na-adj
inherent
先 — 𠂉 (person variant) on top + 儿 (legs) below
先 originally depicted a person with a foot or step shown above the legs 儿, suggesting someone walking ahead. From this image of going before others came the meanings 'first,' 'earlier,' and 'ahead.' The modern shape preserves the 'legs' radical underneath.
天 — 一 (one/sky) above 大 (big person)
Originally a pictograph of a person (大) with an emphasized head, representing what is above — the sky or heavens. The top stroke evolved into 一, symbolizing the vast expanse overhead. From 'sky' it extended to mean 'day,' 'heaven,' and 'nature.'
的 — white 白 + ladle 勺
Originally a phono-semantic compound: 白 ('white') gave the meaning of bright or clear, and 勺 supplied the sound. It once meant 'bright' or 'target' (still seen in 目的, 'aim'). In modern Chinese it was borrowed as a grammatical particle marking possession or modification.