ซุ่ม

Verb

 * 1) to lurk; to lie or wait in concealment; to cause to do so.
 * 2)  to lurk: to read or observe a discussion, content, etc, without actively contributing.
 * 3)  to do in secret, in private, in silence, or without letting anyone know or notice.

Adverb

 * 1) in ambush; in concealment; in or from a concealed position.
 * 2)  in secret; in private; in silence; without letting anyone know or notice.
 * 1)  in secret; in private; in silence; without letting anyone know or notice.
 * 1)  in secret; in private; in silence; without letting anyone know or notice.
 * 1)  in secret; in private; in silence; without letting anyone know or notice.
 * 1)  in secret; in private; in silence; without letting anyone know or notice.

Noun

 * 1)  voice; sound.