圧力|あつりょくatsuryoku[2]nakadaka (mid-high)

1. noun, physicspressure
   橋はしが圧力あつりょくで落おちた。↗

   The bridge crashed under the pressure.
2. nounpressure (e.g. political); arm-twisting
   その計画けいかくは世論よろんの圧力あつりょくで中止ちゅうしになった。↗

   The plan was given up under the pressure of public opinion.

• Synonym重圧じゅうあつWrittenWritten/formal word for heavy pressure, physical or psychological, as in 「重圧に耐える」. Stronger in degree than 「圧力」.
• SynonymプレッシャーNeutralLoanword usually for psychological pressure, like nerves before a match or exam; common in speech. For physics, 「圧力」 is the usual term.
• RelatedストレスNeutralA loanword for mental or physical strain and the stimuli behind it, centred on the burden a person bears. 「圧力」 centres on force applied from outside.
• Related単位面積当たりの力WrittenThe textbook physics definition of 「圧力」 — force per unit area. A formal, technical phrasing; in everyday use just say 「圧力」.
• Antonym無圧WrittenA technical term for the absence of pressure, the opposite of 「圧力」. Rare outside technical writing.

Use 「圧力」 for both physical pressure and pressuring someone, as in 「圧力をかける」. For mental or physical strain say 「ストレス」; for pre-match or exam nerves, 「プレッシャー」; for heavy pressure, 「重圧」.

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

1. 単位たんい面積めんせきあたりに掛かかる力ちから。
2. 威圧いあつして屈服くっぷくさせようとする力ちから。