How to say "tremendously" in Japanese

• えらく
  adverbA less common, emphatic adverb for the 'awfully' and 'exceedingly' side of 'tremendously': it scales an adjective or verb up sharply, fitting when something is not just big or hard but strikingly so.
  あなたはこの店みせのランチがえらくお気に入きにいりですね。↗

  You are very fond of the lunch menu of this restaurant.
• すごく
  adverbThe plain, all-purpose choice for 'extremely' and 'very': use it wherever English 'tremendously' just means 'to a very high degree', from describing a long wait to praising someone's kindness.
  「スーはあなたのことすごく怒おこっているわよ」そのウェイトレスは言いうのであった。↗

  "Sue's very angry with you," my new waitress said.
• すっごく
  adverbA stretched, more emphatic conversational form of the plain intensifier: it carries the same 'extremely, very' meaning but sounds casual and expressive, so it belongs in relaxed talk rather than formal writing.
• ものっそい
  adverbSlang for 'incredibly' or 'tremendously': a very casual, punchy intensifier you hear among friends, and seldom the word you want in polite or written contexts.

Choose 「すごく」 for plain 'very/extremely'; 「すっごく」 when you want casual emphasis; 「えらく」 for the 'awfully, exceedingly' feel; 「ものっそい」 only as slangy 'incredibly' in relaxed speech.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• えらくawfully
• すごくextremely
• すっごくextremely
• ものっそいextremely