Soggy, soaking, or drenched; messy and soaked through (often with mud or water).
昨日の雨で公園の芝生はぐじゃぐじゃになっていた。
Because of yesterday's rain, the park's grass was all soggy and muddy.
子どもがびしょ濡れで帰ってきて、ズボンがぐじゃぐじゃだ。
The child came home soaking wet; his pants are all soggy.
料理をこぼしてテーブルがぐじゃぐじゃになった。
I spilled food and the table became a mess and sticky.
Incessantly (complaining); persistently grumbling or whining over and over.
彼は給料が安いとぐじゃぐじゃ不平を言っている。
He's constantly whining that his salary is too low.
ぐじゃぐじゃ言ってないで、まず行動しなさい。
Stop complaining and take action first.
会議中にぐじゃぐじゃ文句を言うのはやめてほしい。
I'd like you to stop grumbling during the meeting.