疑点
yí diǎn · HSK 7
a doubtful point
🔍❓ 疑 = doubt/suspect + 点 = point/dot, so a doubtful point worth questioning
点 is the same 点 as in 重点 (key point) and 地点 (location); here it marks a specific spot. Pair it with 疑 (doubt) and you get the one suspicious point in a story or case.
点 — fire radical 灬 + 占 (zhān, phonetic)
Originally written 點, a semantic-phonetic compound: 黑 (black) gave the meaning 'small black mark or dot' while 占 supplied the sound. It first referred to ink spots, then extended to 'point, drop, a little,' and verbs like 'to mark' or 'to light (a fire),' reflected in the simplified form's 灬 (fire) component.