勘 means “intuition, reckoning”

かん · kan

Also: perception, check, compare

On'yomi (Chinese reading)
カン

JLPT N1 · Taught in secondary school · 11 strokes

The story

Strength (力) beside 甚, extreme: a mind working hard enough to sense what can't be seen. 勘 is a hunch, and 勘違い a mistaken one, but 勘定 is reckoning up, so お勘定 is how you ask for the bill in a Japanese restaurant.

Used in 勘違い (kanchigai, misunderstanding), 勘定 (kanjou, bill/account), and 勘 (kan, intuition)

More from Learning & Reason

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Readings from KANJIDIC2, © EDRDG, CC BY-SA.