合体|がったいgattai[0]heiban (flat)

1. noun, suru verb, transitive verb, intransitive verbunion; combination; coalescence; amalgamation; merger; incorporation
   こういう風ふうに合体がったいすれば、１４ポートのＵＳＢハブになります。↗

   If you combine them in this way, you get a 14 port USB hub.
2. noun, suru verb, intransitive verb, biologyconjugation (of gametes)
3. noun, suru verb, intransitive verbsexual intercourse; copulation

• Synonym合同ごうどうWrittenWritten/formal prose. Several parties joining together, as in 「合同練習」 or 「合同会議」; also congruence in geometry. 「合体」 is about forming a single whole.
• Synonym合併がっぺいWrittenWritten/formal prose. Companies or municipalities merging into one; 「合体」 covers any two or more things becoming one, not just organizations.
• Synonym結合けつごうNeutralNeutral. Things linking or bonding together; also a chemical bond, as in 「結合力」. 「合体」 leans toward several things forming one whole.
• Synonym合流ごうりゅうNeutralNeutral. Rivers or crowds flowing together, as in 「駅で合流」; 「合体」 leans toward merging into a single whole.
• Synonym合成ごうせいNeutralNeutral. Synthesizing several things into one, in chemistry or imaging, as in 「画像合成」; 「合体」 stresses becoming one body and need not yield a new substance.
• Synonym複合ふくごうWrittenWritten/formal prose. Composite or combined, as in 「複合施設」; 「合体」 leans toward several things forming a single whole.
• Synonym併合へいごうWrittenWritten/formal prose. Combining two or more into one, as in 「訴訟の併合」 or 「市町村の併合」; with territory or organizations it can imply annexation, which 「合体」 lacks.
• Synonym融合ゆうごうNeutralNeutral. Different things blending and fusing into one, as in 「文化の融合」; 「合体」 stresses coming together as a single whole.
• Synonym合わさるあわさるNeutralNeutral. An intransitive verb for two things fitting snugly together or joining naturally; 「合体」 puts more weight on forming a single whole.
• Synonym一体化いったいかWrittenWritten/formal prose. Step-by-step integration into one, as in 「経済の一体化」; 「合体」 stresses the act of merging into a single body itself.
• Synonym合一ごういつWrittenWritten/formal prose. Becoming one, mostly with abstract things, as in 「知行合一」. 「合体」 is more common and fits both concrete and abstract cases.
• Related合わすあわすNeutralNeutral. A godan verb synonymous with 「合わせる」: matching, coordinating, or joining things, as in 「手を合わす」. 「合体」 is a noun focused on forming one whole.
• Related混ぜるまぜるCasualColloquial. A verb for stirring things in and mixing them; 「合体」 is about forming a whole, not mixing.
• Related組み合わせるくみあわせるNeutralNeutral. A verb for combining or pairing things, or pitting them against each other, as in 「色を組み合わせる」; 「合体」 leans toward becoming one body.
• Related連合れんごうWrittenWritten/formal prose. Uniting for a common goal while each side stays independent; 「合体」 means merging into one body.
• Related合わせるあわせるNeutralNeutral. The most versatile verb: joining things together or matching them; 「合体」 leans toward forming a single whole.
• Related組み込むくみこむNeutralNeutral. A verb for building something in, incorporating it as part of a whole; 「合体」 leans toward several things merging into one.
• Related交えるまじえるWrittenWritten/formal prose. A verb for mixing something in or crossing, as in 「言葉を交える」; 「合体」 leans toward combining.
• Related共同きょうどうNeutralNeutral. Several parties cooperating or acting together, as in 「共同研究」; 「合体」 stresses becoming one body, not merely acting jointly.
• Related混合こんごうNeutralNeutral. Things of different natures mixed together, as in 「男女混合」; 「合体」 puts more weight on forming a single whole.
• Related混成こんせいWrittenWritten/formal prose. Mixed composition, as in 「混成チーム」; 「合体」 leans toward merging into one body.
• Related組み入れるくみいれるWrittenWritten/formal prose. Working something into another whole, the emphasis falling on adding it in; 「合体」 stresses several things becoming one.
• Related混じるまじるCasualColloquial. A verb for being mixed in or mingled, as in 「白髪が混じる」; 「合体」 leans toward forming one body.
• Related化合かごうWrittenWritten/formal prose. A chemistry term: elements combining into a new substance. 「合体」 is not limited to chemistry and covers merging in general.
• Related配合はいごうNeutralNeutral. Combining or blending things in set proportions, as in 「配合飼料」; 「合体」 stresses forming a whole, with no sense of proportioning.
• Related合すがっすNeutralNeutral. Written 「合す」, it still reads 「あわす」—just another spelling, same usage: matching, coordinating, or joining. 「合体」 is a noun for forming one whole.
• Related合するがっするWrittenWritten/formal prose. A verb for joining, uniting, or coming together; rare in everyday use. 「合体」 focuses on several things forming a single whole.
• Related混ぜ合わせるまぜあわせるNeutralNeutral. A verb for mixing and blending evenly, as in 「材料を混ぜ合わせる」; 「合体」 leans toward forming a whole.
• Related練り合わせるねりあわせるNeutralNeutral. Kneading different things together until they blend; the kneading itself is the point. 「合体」 stresses forming a whole and needs no kneading.
• Related一緒になるいっしょになるCasualColloquial. A set phrase for coming together as one, also a soft way to say getting married; 「合体」 is a Sino-Japanese noun for merging into a whole.
• Antonym分離ぶんりNeutralNeutral. Separating things, or things coming apart; the opposite of 「合体」 in whether several things stay apart or become one body.
• Antonym分解ぶんかいNeutralNeutral. Taking a whole apart into parts, or a compound breaking into several substances; the opposite of 「合体」 in building versus breaking down a whole.
• Antonym分割ぶんかつNeutralNeutral. Dividing something into several parts; the opposite of 「合体」 in merging into one versus splitting up.

「合体」 is the default for two or more things merging into a single whole, as in 「ロボットが合体する」, and it also covers the union of gametes and sexual intercourse. For organizations combining, use 「合併」; for things blending into one, 「融合」. Verbs like 「合わせる」, 「混ぜる」 and 「組み合わせる」 describe the act of combining rather than the resulting whole; 「連合」 implies the parties stay independent, and 「共同」 is about acting together, not merging. The opposites are 「分離」, 「分解」 and 「分割」.

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

1. 二ふたつ以上いじょうのものが一ひとつのものになること。
2. 性交せいこう。