small attendance; poor turnout
Used for events, performances, or businesses when the number of attendees or customers is low. Often contrasted with 大入り (full house).
Antonyms: 大入り
The opening day had a small attendance, but word of mouth gradually brought in more customers.
雨のせいで、野外コンサートは不入りに終わった。
Because of the rain, the outdoor concert ended with a poor turnout.
Compound of 不 (negative prefix) and 入り (entering, attendance). The exact historical derivation is uncertain, but the meaning is transparent from its components.