制約|せいやくseiyaku[0]heiban (flat)

1. noun, suru verb, transitive verblimitation; restriction; condition; constraints
   合衆国がっしゅうこくには小火器しょうかきの販売はんばいに関かんする法律上ほうりつじょうの制約せいやくはほとんどない。↗

   There are few legal constraints on the sale of firearms in the U.S.

• Synonym制限せいげんNeutralSets a clear limit or boundary, as in 「年齢制限」; 「制約」 stresses how conditions constrain an activity.
• Synonym限定げんていNeutralNarrows something to a fixed range or set, as in 「限定品」; 「制約」 is about the conditions that constrain.
• Synonym限るかぎるNeutralA verb meaning to limit or confine something; 「制約」 is a noun for the conditions that constrain.
• Synonym拘束こうそくNeutralBinding a person's body or freedom of movement, as in 「法的拘束力」 or 「時間を拘束する」; 「制約」 is about conditions.
• Synonym束縛そくばくNeutralBinding or tying someone down, with an oppressive nuance; 「制約」 sounds more objective.
• SynonymリミテーションNeutralA rare loanword for limitation; 「制限」 is the usual word to use.
• Related抑制よくせいNeutralHolding back or suppressing something, such as appetite; 「制約」 refers to limits imposed by objective conditions.
• Related限度げんどNeutralA limit or bound, usable for both ceilings and floors, as in 「限度額」 and 「最低限度」; 「制約」 points to the conditions themselves.
• Related押さえるおさえるNeutralPhysically pressing or pinning something down, or controlling a situation; 「制約」 is about constraints from objective conditions.
• Related抑えるおさえるNeutralActively holding emotions, prices, etc. in check; 「制約」 stresses limits set by conditions rather than deliberate restraint.
• Related制止せいしNeutralStopping someone's words or actions on the spot; 「制約」 refers to limits imposed by conditions, not immediate intervention.
• RelatedセーブNeutralA loanword for curbing or economizing on something, or for saving data; 「制約」 is about conditions.
• Related制御せいぎょNeutralControlling machines, devices, or one's emotions; 「制約」 refers to the conditions that constrain.
• Related限界げんかいNeutralThe utmost limit of ability or endurance, the point beyond which one cannot go; 「制約」 is about external constraints.
• Related抑止よくしWrittenWritten word for deterrence, as in 「核抑止」; 「制約」 stresses limits set by conditions.
• Related抑圧よくあつNeutralPressing down on or oppressing speech, people, etc.; 「制約」 refers to limits from objective conditions.
• Related牽制けんせいNeutralKeeping an opponent in check so they cannot act freely; 「制約」 describes constraints from objective conditions.
• RelatedくびきWrittenWritten word for an ox's yoke, used figuratively for oppression and bondage; 「制約」 is the more objective term.
• Related手枷てかせWrittenWritten word for handcuffs, used figuratively for restraints on freedom; 「制約」 is a more objective term.
• Related首枷くびかせWrittenWritten word for a pillory, used figuratively for a burden; 「制約」 is the more objective choice.
• Related繋縛けいばくWrittenA rare written word for binding or tying down; 「束縛」 or 「制約」 is normally used.
• Antonym自由じゆうNeutralAntonym: freedom, the opposite of being constrained by conditions.
• Antonym解放かいほうNeutralAntonym: liberation or release from restraints, the opposite of being under 「制約」.

Use 「制約」 for constraints on freedom imposed by conditions such as time, budget, or law, as in 「時間的制約」 and 「制約を受ける」. For a limit explicitly set, say 「制限」; to narrow a range, 「限定」; for bondage, 「束縛」; for checking someone, 「牽制」; for freedom, 「自由」.

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

1. ある条件じょうけんを付つけて自由じゆうな活動かつどうを抑おさえること。
2. 物事ものごとの成立せいりつに必要ひつような条件じょうけん。