ワンパターン

na-adjective, noun which may take the genitive case particle 'no', noun

one-track; repetitive; predictable; stereotyped

Describes something that always follows the same pattern, lacking variety. Often used critically for ideas, behavior, or creative works. Wasei-eigo from English 'one pattern'.

wasei-eigo (Japanese-coined English), from one pattern

• 彼かれのギャグはいつもワンパターンだ。

  His jokes are always the same old thing.

• ワンパターンな生せい活かつに飽あきてきた。

  I'm getting tired of my monotonous routine.