ものすごい・物凄いmonosugoi[4]nakadaka (mid-high)

1. i-adjectiveterrific; staggering; tremendous; incredible; extreme
   彼女かのじょはものすごい食欲しょくよくがある。↗

   She has a gigantic appetite.
2. i-adjectivefrightful; ghastly; horrific; terrible; awful; gruesome; eerie
   ものすごい叫び声さけびごえに彼かれはぞっとした。↗

   The sound of an awful scream made him shudder.

• Synonym凄まじいすさまじいNeutralStresses violence so intense it frightens; typical of force or scenes, as in 「凄まじい勢い」. 「物凄い」 is more common in speech and covers both good and bad extremes.
• SynonymすごいCasualThe everyday colloquial staple, usable for good or bad, and can stand alone as an exclamation: 「すごい」. 「物凄い」 is stronger and slightly more exaggerated.
• Synonymとんでも無いとんでもないCasualCovers the absurd or unexpected, and doubles as the polite deflection 「とんでもない」. 「物凄い」 expresses extreme degree or something frightening.
• Synonym強烈きょうれつNeutralMeans intense or striking, as in 「強烈な印象」. 「物凄い」 is broader and fits both good and bad cases.
• Synonym絶大ぜつだいWrittenWritten/formal prose for immensity, typically with popularity or trust, as in 「絶大な人気」. 「物凄い」 is colloquial.
• SynonymとてつもないNeutralSuggests something beyond common sense, absurdly large, as in 「とてつもない計画」. 「物凄い」 focuses on astonishing degree or on being frightening.
• Related恐ろしいおそろしいNeutralCenters on the fear it inspires, though it can also mean astonishing. 「物凄い」 more often describes sheer degree and need not be scary.
• Related激しいはげしいNeutralDescribes violent, intense momentum, as in 「激しい雨」. 「物凄い」 is broader and can modify quantity or degree.
• Related甚だしいはなはだしいWrittenWritten/formal prose, mostly for negative cases, as in 「甚だしい誤解」. 「物凄い」 is colloquial and works for both good and bad.
• RelatedひどいCasualColloquial and mostly negative—cruelty or awfulness. 「物凄い」 can be either positive or negative.
• RelatedでかいCasualColloquial, slightly rough word for big—size, sums, or scale, as in 「でかい仕事」. 「物凄い」 describes degree or force.
• Related大きいおおきいNeutralThe most neutral word for size or scale. 「物凄い」 stresses astonishing degree and is not limited to size.
• RelatedおっきいCasualChildish, colloquial word for big, covering size, quantity, or degree. 「物凄い」 stresses how astonishing something is.
• Related怖いこわいCasualColloquial word for feeling scared or being scary—subjective fear. 「物凄い」 usually means great degree, though it can also mean frightening.
• Related猛烈もうれつNeutralDescribes fierce momentum or extreme degree, as in 「猛烈な暑さ」. 「物凄い」 is more colloquial.
• Related甚大じんだいWrittenWritten/formal prose, mostly for enormous losses or impact, as in 「被害甚大」. 「物凄い」 is colloquial and far more versatile.
• Related巨大きょだいNeutralDescribes huge bulk or scale. 「物凄い」 covers degree or force and is not limited to size.
• Related悲惨ひさんNeutralMeans tragic and miserable, heartbreaking to behold. 「物凄い」 stresses degree and need not be tragic.
• Related異様いようNeutralMeans strange or bizarre, as in 「異様な光景」. 「物凄い」 stresses astonishing degree.
• Related驚くべきおどろくべきWrittenWritten/formal prose with a tone of wonder, usually positive, as in 「驚くべき成果」. 「物凄い」 is more colloquial.
• Relatedど偉いどえらいCasualColloquial with a dialect flavor, meaning tremendous or impressive. 「物凄い」 is more universal, used nationwide.
• Relatedもの恐ろしいものおそろしいWrittenWritten/formal prose for a vague, unaccountable sense of dread. 「物凄い」 stresses astonishing degree, for better or worse.
• RelatedおどろおどろしいNeutralSuggests something eerie and sinister, or exaggerated and showy—often for atmosphere or design. 「物凄い」 focuses on degree.
• RelatedどぎついCasualColloquial for colors or expression that are too loud or garish. 「物凄い」 means astonishing or frightening degree, with no garish sense.
• Antonym平凡なNeutralThe opposite of 「物凄い」 in degree: plain, unremarkable, ordinary.

For astonishing degree, good or bad, in speech, 「物凄い」 and 「すごい」 are the defaults; 「物凄い」 is stronger and slightly exaggerated. Use 「凄まじい」 for force so violent it frightens, 「途轍もない」 for the absurdly outlandish, 「激しい」 or 「猛烈」 for fierce momentum, and 「巨大」 for sheer size. Fear leans on 「恐ろしい」 or 「怖い」, negative written contexts on 「甚だしい」 or 「甚大」, and wonder on 「驚くべき」.

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

1. なんとも恐おそろしい。
2. 通常つうじょう考かんがえられる程度ていどを超こえているさま。