外行 wàiháng layman
layman; amateur
How to remember 外行: 外 outside + 行 go = layman.
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How it is used
- A layman / amateur (in a field) - 我是外行 (wǒ shì wàiháng) I'm no expert; 说外行话 (shuō wàiháng huà) talk like an amateur.
- Note reading wàiháng (not wàixíng). Opposite of 内行 (nèiháng, an insider/expert). Colloquial - 他是内行 (tā shì nèiháng) he's an expert.