举一反三
jǔ yī fǎn sān · HSK 7
to deduce many things from one case
💡 举 raise + 一 one + 反 infer + 三 three: lift one example, infer three more
Character-by-character: 举 (raise) 一 (one) 反 (turn back / infer) 三 (three). Raise a single case and a sharp learner deduces three related ones — the idiom for generalizing from one example.
举 — hands 𠆢 + give 与 (simplified from 擧)
Originally written 擧, showing hands (手) lifting something together with the phonetic 與 'together'. The simplified form 举 keeps the idea of many hands raising up. Core meaning 'to lift, raise' extended to 'to launch, propose, hold (an event)'.
一 — single horizontal stroke
一 is one of the simplest pictographs in Chinese, depicting a single horizontal line to represent the number one. It has retained essentially the same form since oracle bone script over 3,000 years ago. By extension it also means 'first,' 'whole,' or 'same.'
反 — hand 又 under cliff 厂
Originally a pictograph of a hand (又) turning something over against a cliff or slope (厂), depicting the action of flipping or reversing. From this came the core meaning 'to turn over,' which extended to 'opposite,' 'contrary,' and 'rebel against.' The character is purely semantic, with no phonetic component.
三 — three horizontal strokes 一 + 一 + 一
三 is a pictographic numeral: three stacked horizontal lines representing the number three, parallel to 一 (one) and 二 (two). The form has been stable since oracle bone script. It carries no phonetic component; the meaning 'three' is direct and visual.