慎 (readings: しん, つつし, つつ; Japanese kanji) means “Humility / Be Careful / Discreet / Prudent”. It is a Jōyō kanji taught in Japanese secondary school (junior & senior high) — the 高手 · Master tier beyond the grade 1–6 Kyōiku set, and appears in words such as 慎重 (prudence).
What does 慎 mean?