下手
へた · heta · JLPT N5 · noun
unskillful
下手 = lower + hand: the lower hand is the clumsy, unskilled one
下 (below) + 手 (hand) means a low-grade hand, so poor at something. Its opposite is 上手 (jouzu) = upper hand, skilled. The reading heta is irregular, so learn it as one unit: he-ta, bad at it.
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'.
手 — pictograph of a hand with five fingers
手 is a pictograph showing an open hand with fingers and a wrist. Early bronze and oracle bone forms clearly depict five splayed fingers, which simplified over time into the modern shape. It keeps its original meaning of 'hand' and also serves as a radical in many characters related to hand actions.