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Most common first
Japanese order (あいうえお)
Romaji (A–Z)
JLPT level (easy → hard)
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Word family of 約
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契約
けいやく
Common word
N3
Nouns
contract; agreement
予約
よやく
Common word
N5
Nouns
reservation; booking; appointment · subscription; contract; pledge · programming; setting (a timer, device)
約束
やくそく
Common word
N5
Nouns
promise; agreement; one's word; contract · appointment; engagement; date · convention; rule · destiny; fate
条約
じょうやく
Common word
N2
Nouns
treaty; pact; convention; agreement
婚約
こんやく
Common word
N3
Nouns
engagement; betrothal
節約
せつやく
Common word
N3
Nouns
saving; economizing; cutting down
規約
きやく
Common word
N1
Nouns
agreement; rules; code; protocol; convention; bylaw
制約
せいやく
Common word
N1
Nouns
limitation; restriction; constraint
解約
かいやく
Common word
N1
Nouns
cancellation of a contract; termination of an agreement
集約
しゅうやく
Common word
Nouns
consolidate; aggregate; summarize
要約
ようやく
Common word
N2
Nouns
summary; digest; abstract
公約
こうやく
Common word
N1
Nouns
public pledge; campaign promise; official commitment
誓約
せいやく
Common word
Nouns
oath; vow; pledge; covenant
違約
いやく
Nouns
breach of contract; default
確約
かくやく
Common word
Nouns
firm promise; definite commitment
旧約
きゅうやく
Common word
Nouns
old promise; old agreement; old covenant · Old Testament
特約
とくやく
Common word
Nouns
special contract; special agreement; rider (insurance)
密約
みつやく
Common word
Nouns
secret agreement; secret pact
倹約
けんやく
Common word
N1
Nouns
thrift; frugality; economy
新約
しんやく
Nouns
new contract; new agreement · New Testament
盟約
めいやく
Common word
Nouns
solemn pledge; pact; covenant; alliance
約定
やくじょう
Nouns
agreement; stipulation; contract
協約
きょうやく
Nouns
pact; convention; agreement
約款
やっかん
Common word
Nouns
clause; article; stipulation
締約
ていやく
Common word
Nouns
conclusion of a treaty; entering into a treaty
約する
やくする
する verbs
promise; pledge · abridge; simplify; shorten · reduce (mathematics)
括約筋
かつやくきん
Nouns
sphincter; constrictor muscle
成約
せいやく
Common word
Nouns
conclusion of a contract; closing a deal
先約
せんやく
Nouns
prior engagement; previous appointment · prior agreement; previous promise; previous contract
約数
やくすう
Nouns
divisor; factor
一粒子既約
いちりゅうしきやく
Nouns
one particle irreducible
ウェブ予約
ウェブよやく
Nouns
online booking; online reservation
予約名
よやくめい
Nouns
reserved name
信約
しんやく
Nouns
vow; promise; pledge
傭船契約
ようせんけいやく
Nouns
charter party; ship chartering contract
党規約
とうきやく
Nouns
party protocol; party regulations
内約
ないやく
Nouns
private agreement; secret treaty; tacit understanding
前約
ぜんやく
Nouns
previous engagement; prior promise
協約国
きょうやくこく
Nouns
signatory powers; high contracting parties
口約
こうやく
Nouns
verbal promise; oral agreement
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