過多|かたkata[1]atamadaka (head-high)

1. noun, na-adjectiveexcess; surplus; superabundance

• Synonym過度かどNeutralRefers to degree exceeding a proper limit, as in 「過度な期待」. It concerns degree, while 過多 only says the amount is too large.
• Synonym過剰かじょうNeutralCovers quantity or degree beyond what is needed, as in 「供給過剰」 and 「自意識過剰」; more common than 過多 and wider in range.
• Synonym過大かだいNeutralSays estimates, demands, burdens etc. are too large, as in 「過大評価」; it focuses on size or weight, 過多 on sheer quantity.
• Synonym過当かとうWrittenWritten style. Means beyond reasonable limits, seen in 「過当競争」, and can describe excessive demands or burdens; stresses unreasonableness, not just quantity.
• Related過重かじゅうNeutralDescribes weight or burdens being too heavy, as in 「過重労働」; its object is a load, whereas 過多 is about quantity.
• Related並み外れなみはずれNeutralMeans far beyond the average level, as in 「並外れた体力」; usually praise, while 過多 is a negative 'too much'.
• Related無茶むちゃCasualColloquial. Means unreasonable or reckless, as in 「無茶をする」; 「無茶な量」 means an absurdly large amount. It stresses unreasonableness; 過多 states quantity objectively.
• Related極端きょくたんNeutralMeans leaning to one extreme, as in 「極端な考え」; it is about straying from the middle, while 過多 is about quantity exceeding the norm.
• Related余計よけいNeutralMeans superfluous or unneeded, as in 「余計なお世話」; it carries a nuance of being a nuisance, while 過多 just says the quantity is too large objectively.
• Related法外ほうがいWrittenWritten style. Says prices, demands etc. are outrageous, as in 「法外な値段」 and 「法外な要求」; it stresses going beyond common sense, 過多 stresses quantity.
• Related甚だしいはなはだしいWrittenWritten style. Says the degree of something, usually something bad, is extreme, as in 「誤解も甚だしい」; it is about severity, 過多 about quantity.
• Related過分かぶんWrittenWritten style. Means beyond what one's status or deserts warrant, as in 「過分なお言葉」 and 「過分な報酬」; often humble, about propriety rather than quantity.
• RelatedとてつもないCasualColloquial. Describes something absurdly large or unbelievable, with a tone of surprise; 過多 plainly states that the quantity is too large.
• Related冗多じょうたWrittenWritten style. Means excessive with much that is redundant or useless; rare today, and 過多 is the natural choice in everyday speech.
• Antonym過少かしょうWrittenWritten style. Means too few or too little; the exact opposite of 過多 in quantity, with matching word formation.
• Antonym不足ふそくNeutralMeans not enough or lacking, as in 「人手不足」; far more common than 過少, and the counterpart to 過多's 'too much'.
• Antonym欠乏けつぼうWrittenWritten style. Means a lack of something necessary, as in 「ビタミン欠乏」; opposite of 過多, with a heavier tone.

「過多」 means an excessive amount, also in compounds like 「情報過多」. For degree gone too far use 「過度」, for more than needed 「過剰」 (more common than 過多, wider in range), for too-large estimates/burdens 「過大」, for heavy loads 「過重」, for unneeded surplus 「余計」. Written: 「過当」 (unreasonable), 「過分」 (beyond one's deserts), 「法外」 (outrageous prices/demands), 「甚だしい」 (severe degree); 「冗多」 is rare. Colloquial 「無茶」 and 「途轍もない」 mean absurdly large; 「並み外れ」 praises. Opposites: 「過少」 (written), 「不足」 (common), 「欠乏」 (heavy).

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

1. 多おおすぎること。