がちがち

がちがち
adverb, onomatopoeia
rigid; stiff; frozen solid; clattering
1. rigid; stiff; tense
describes something or someone that is very stiff, tense, or inflexible
緊張(きんちょう)でがちがちになった。
I became stiff with nervousness.
(かれ)はがちがちの保守派(ほしゅは)だ。
He is a rigid conservative.
2. frozen solid; rock-hard
describes something that has become completely hard, like frozen food
冷凍庫(れいとうこ)(にく)はがちがちに(こお)っている。
The meat in the freezer is frozen solid.
3. clattering; chattering
mimics the sound of teeth chattering from cold or things clattering together
(さむ)くて()ががちがち()った。
My teeth chattered from the cold.

がちがち is a mimetic word (擬態語(ぎたいご)/擬音語(ぎおんご)) that can express both a physical state and a sound. It conveys extreme stiffness, hardness, or rigidity.

COMMON PATTERNS:

  • がちがちになる: to become stiff/rigid (from nervousness, cold, etc.)
  • がちがちに(こお)る: to freeze solid
  • がちがちの〜: rigid/staunch ~ (e.g., がちがちの保守派(ほしゅは))
  • ()ががちがち()る: teeth chatter

SIMILAR WORDS:

  • かちかち: similar but softer nuance; often for frozen/hard objects
  • こちこち: stiff, rigid; also used for nervousness
  • ばりばり: energetic, going strong (positive connotation)
  • がちがち is stronger and more emphatic than かちかち

REGISTER:
Informal and colloquial. Common in everyday speech.