(ねんちゃく)

ねんちゃく
noun
adhesion; stickiness; persistence
1. adhesion; stickiness; clinging
The physical property of sticking to a surface. Used for tape, glue, and other adhesive materials.
粘着(ねんちゃく)テープで(はこ)()じた。
I sealed the box with adhesive tape.
湿気(しっけ)粘着(ねんちゃく)(りょく)(よわ)くなった。
The adhesive strength weakened due to humidity.
この(のり)粘着(ねんちゃく)(せい)(たか)くてはがれにくい。
This glue has high adhesiveness and is hard to peel off.
2. persistence; obsessive clinging; stalker-like behavior
Figuratively, persistently and obsessively attaching oneself to someone or something in an unwelcome way, especially online harassment or stalking behavior.
ネットで粘着(ねんちゃく)されて(こま)っている。
I'm being persistently harassed online and don't know what to do.
粘着(ねんちゃく)(しつ)性格(せいかく)で、一度(いちど)()になると(はな)れられない。
He has a persistent personality — once something bothers him, he can't let it go.
特定(とくてい)のユーザーに粘着(ねんちゃく)するのは迷惑(めいわく)行為(こうい)だ。
Obsessively targeting a specific user is harassment.

USAGE:
The literal sense appears in everyday contexts involving tape, labels, and adhesives. The figurative sense is common in internet culture, describing someone who obsessively follows and harasses another user.

COMMON COLLOCATIONS:

  • 粘着(ねんちゃく)テープ (adhesive tape)
  • 粘着(ねんちゃく)(りょく) (adhesive strength)
  • 粘着(ねんちゃく)(しつ) (persistent/obsessive temperament)
  • 粘着(ねんちゃく)する (to cling to; to persistently harass)

SIMILAR WORDS:
接着(せっちゃく) refers to bonding or gluing two surfaces together (a deliberate action). 粘着(ねんちゃく) emphasizes the sticky, clinging quality of the adhesive itself.