An onomatopoeia describing a creaking or squeaking sound — e.g., floors, doors, or joints rubbing and making noise.
古い床が人が歩くたびにギシギシ鳴る。
The old floor creaks every time someone walks on it.
寒さで膝がギシギシして、正座がつらかった。
My knees creaked in the cold, and sitting on my heels was painful.
あの戸は古くて開け閉めするたびにギシギシ言う。
That door is old and squeaks every time it's opened or closed.
A mimetic word often used with 〜に to mean packed tightly or squeezed in; pressing things or people in with force.
箱に荷物をギシギシに詰め込んでしまった。
I ended up packing the luggage tightly into the box.
古い棚に本をギシギシに押し込んだので取り出しにくい。
I shoved the books tightly into the old shelf, so they're hard to take out.
A mimetic term indicating relentless or severe criticism/complaint — to harp on or attack relentlessly.
上司はミスについて部下をギシギシと責め続けた。
The boss kept relentlessly criticizing his subordinate for the mistake.
記者たちがその政治家にギシギシ質問を浴びせた。
Reporters bombarded the politician with tough, relentless questions.