Expressions (phrases, clauses, etc.), Godan verb with 'ru' ending
to turn out just as one wished; to come up to one's expectations; to play into the hands (of)
Idiomatic expression
Also written 思うつぼにはまる【おもうつぼにはまる】、思うツボにはまる【おもうつぼにはまる】、思う壺に嵌る【おもうつぼにはまる】