归根到底
guī gēn dào dǐ · HSK 7
ultimately
🌳 归根到底 = return + root + reach + bottom: trace it back to the root
Literal word-by-word: 归 return, 根 root, 到 reach, 底 bottom. Following something all the way down to its root and bottom is how you land on what it comes down to after all.
归 — 阜 (mound) + 帚 (broom) + 止 (foot)
Originally depicted a bride being escorted to her husband's home, with 帚 (broom) symbolizing her domestic role and 止 (foot) showing movement. The meaning shifted from 'a woman returning to her marital home' to the broader sense of 'to return' or 'go back'. The 阜 component suggests the journey involved.
根 — tree radical 木 + 艮 (phonetic)
根 is a semantic-phonetic compound. The left side 木 ('tree') gives the meaning, since the character originally referred to the roots of a tree. The right side 艮 supplies the sound. From 'tree root' it extended to mean 'root, base, foundation' in general.
到 — 刂 knife + 至 (phonetic, 'arrive')
到 is a semantic-phonetic compound. 至 ('to arrive') gives both meaning and sound, while 刂 (knife) was added later, likely as a phonetic reinforcer or to distinguish the written form. The core sense 'to arrive, reach' comes directly from 至, and 到 has carried that meaning since early script forms.
底 — 广 (shelter radical) + 氐 (phonetic 'dǐ')
底 is a semantic-phonetic compound. The 广 radical depicts a roofed structure or shelter, suggesting the bottom or base of a building. The component 氐 supplies the sound 'dǐ' and originally meant 'low' or 'base,' reinforcing the meaning. Together they convey 'bottom,' 'foundation,' or 'underneath.'