倒下
dǎo xià · HSK 7
to topple over
🏚️ dǎo xià = fall + down — dao sounds like DOWN-o, and xià means down
Both parts reinforce the same direction: dǎo means to fall or topple, xià means downward. So collapsing is literally falling-down. The dao/down sound overlap locks in the first half.
倒 — person radical 亻 + 到 (to arrive)
倒 is a semantic-phonetic compound: the person radical 亻 gives meaning (an action done by/to a person), while 到 supplies the sound 'dào'. Originally meaning 'to fall over' (a person toppling), it extended to 'invert, upside down, pour out', as when something falls and spills.
下 — horizontal line 一 + mark below
下 is an indicative character: a long horizontal line represents a reference level, and a shorter stroke placed beneath it points to the area below. The original meaning 'below, down' comes directly from this spatial diagram, and it later extended to verbs like 'descend' and 'lower'.