密 hard to see

(crown) + 必 (surely) + 山 (mountain)

★★★☆☆

11 strokes

Onyomi

MITSU

as in, "MEE TOO ! I want to be in on the secret!! "

The mountain is surely hard to see under that giant crown.

ひそ*か ( な )

surreptitious, furtive, secretive
★☆☆☆☆

秘密(ひみつ)	a secret ★★★★★ 秘 (secret) + 密 (hard to see) = 秘密 (a secret)
密輸(みつゆ)	smuggling ★☆☆☆☆ 密 (hard to see) + 輸 (transport) = 密輸 (smuggling)

precise, strict,
几帳面な厳密厳格正確正確精巧厳重きちんと明確に

secret
秘密内緒

snitch
ちくる密告言いつける