とても・迚もtotemo

1. adverbvery; awfully; exceedinglyとっても is more emphatic
   「これはとてもおもしろそうだね」とひろしが言いいます。↗

   "This looks pretty interesting," Hiroshi says.
2. adverb(not) at all; by no means; simply (cannot)before a negative form
   この雨あめの中なかを外出がいしゅつすることはとてもできないことです。↗

   Going out in this rain is out of the question.

• Synonym誠にまことにFormalFormal and solemn, used chiefly in apologies and thanks, as in 「誠に申し訳ございません」; 「とても」 is the everyday word and covers far more contexts.
• SynonymずいぶんNeutralOften carries a sense of surprise, as in 「随分大きくなったね」, and can also imply something is outrageous, as in 「随分な言い方」; 「とても」 is a plain degree word.
• Synonym大変たいへんNeutralCommon in polite or formal settings, as in 「大変申し訳ない」, and more formal than 「とても」; it also means serious or laborious.
• Synonym甚だはなはだWrittenA written-style word that mostly modifies negative expressions, as in 「甚だ迷惑だ」; 「とても」 works with both positive and negative words.
• Synonym非常にひじょうにNeutralSlightly more formal than 「とても」 and typical of writing and speeches; only 「とても」 before a negation can mean 'simply cannot', as in 「とてもできない」.
• SynonymごくNeutralRead 「ごく」; it typically modifies words like ordinary or few, as in 「ごく普通」「ごくわずか」, while 「とても」 combines with a much wider range of words.
• Synonym極めてきわめてWrittenFound in formal writing and reports, as in 「極めて重要」; 「とても」 is the everyday spoken word, and which of the two sounds stronger depends on context.
• SynonymひどくNeutralMostly used with negative expressions, as in 「ひどく疲れた」; 「とても」 pairs freely with both positive and negative words.
• SynonymよっぽどCasualColloquial; often used in conjecture, as in 「よっぽど疲れたんだね」, or in comparisons like 「よっぽどいい」.
• Synonym実にじつにWrittenWhen read 「まことに」 as a variant of 「誠に」 it is solemn; usually read 「じつに」 and means truly or indeed, as in 「実に美しい」, while 「とても」 just states a high degree.
• SynonymたいそうWrittenSlightly old-fashioned, as in 「大層喜ぶ」; as a quasi-adjective it suggests exaggeration, as in 「大層なことを言う」.
• SynonymかなりNeutralMeans fairly or considerably, as in 「かなり疲れた」, a notch below 「とても」 in degree; very common in speech.
• SynonymよほどNeutralUsed mainly in conjecture or comparison, as in 「よほど好きなんだ」; slightly more formal than 「よっぽど」.
• Synonym大いにおおいにNeutralMeans greatly or to the full, as in 「大いに飲む」, and mostly modifies actions; 「とても」 typically modifies adjectives.
• Synonym至極しごくWrittenOften used as a suffix, as in 「残念至極」「至極当然」; its flavour is more old-fashioned and solemn than 「とても」.
• SynonymいかにもNeutralStresses that something matches an impression — indeed, or looking just like — as in 「いかにも高そうだ」; 「とても」 expresses degree and can also precede a negation.
• Synonym本当にほんとうにNeutralEmphasises that something is really true, without exaggeration, as in 「本当にありがとう」; 「とても」 only states a high degree and cannot stress genuineness.
• Synonym至っていたってWrittenMeans very, as in 「至って健康」「至って普通」; it sounds more formal than 「とても」.
• SynonymすこぶるWrittenAn old-fashioned, literary-flavoured word, as in 「頗る元気」, seen in writing or deliberately solemn speech; in daily conversation 「とても」 is enough.
• SynonymいたくWrittenA written-style word that mostly modifies feelings, as in 「いたく感動した」; 「とても」 applies to a far broader range of words.
• Related最ももっともNeutralA superlative comparing items within a group, as in 「最も高い山」; 「とても」 states a high degree without comparison and can also precede a negation to mean 'simply cannot'.
• Related最さいWrittenA prefix meaning 'most', as in 「最高」「最新」; it never stands alone as an adverb and cannot modify adjectives the way 「とても」 does.

Everyday speech takes 「とても」; written prose prefers 「非常に」, and polite or solemn contexts 「大変」 or 「誠に」. In articles and reports use 「極めて」, add a nuance of surprise with 「随分」, and stress that something is genuine with 「本当に」. The remaining words cover narrower shades — degree, comparison, negation, old-fashioned flavour — so choose by register and nuance.

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

1. （後うしろに否定ひてい語ごを伴ともなって）どのようにしても。どうしても。
2. 非常ひじょうに。たいへん。