うじゃうじゃ

adverb, adverb taking the 'to' particle, noun or participle which takes 'suru'

in swarms; in clusters; crawling with

Describes many small creatures or people gathered in a teeming, wriggling mass. Often used with いる or 集まる.

• 公こう園えんにハトがうじゃうじゃいる。

  There are pigeons swarming in the park.

• 夏なつになると、この辺あたりは蚊かがうじゃうじゃ出でる。

  In summer, mosquitoes come out in swarms around here.

adverb, adverb taking the 'to' particle, noun or participle which takes 'suru'

tediously; slowly; in a sluggish mass

Rare usage for something moving or progressing in a slow, tedious, or sluggish manner. Not commonly used in modern Japanese; the swarming sense is dominant.

• 行ぎょう列れつがうじゃうじゃと進すすむ。

  The line moves forward sluggishly.