変動|へんどうhendou[0]heiban (flat)

1. noun, suru verb, intransitive verbchange; fluctuation
   人口じんこうは変動へんどうしないでいる。↗

   The population remains stationary.

• Synonym変わりかわりNeutralRefers to change or something unusual, as in 「お変わりありませんか」; mostly appears in greetings and negatives.
• Synonym変化へんかNeutralThe most general word for change, as in 「気温の変化」; 「変動」 suggests larger movements in states, figures, or the situation.
• Synonym移り変わりうつりかわりNeutralChanges unfolding over time, as in 「季節の移り変わり」, with a wistful tone 「変動」 does not carry.
• Synonym変移へんいWrittenWritten prose for change or shifting, and rare; in everyday speech use 「変化」.
• Synonym変遷へんせんNeutralHistorical transitions, as in 「言葉の変遷」; stresses long-term evolution rather than fluctuation.
• Synonym変転へんてんWrittenWritten prose, rare; describes a situation changing violently or dramatically.
• Synonym変わるかわるNeutralThe native verb for change, as in 「天気が変わる」; the most common word in everyday speech.
• Synonym転変てんぺんWrittenWritten prose for ceaseless, unpredictable change; mostly in set phrases like 「有為転変」.
• Synonym移ろいうつろいWrittenLiterary word for gradual change or fading, as in 「季節の移ろい」; poetic rather than a term for fluctuations.
• Synonym変易へんえきWrittenWritten prose for change or alteration, and rare; in daily conversation say 「変化」.
• Related変容へんようNeutralA change in the overall appearance or character of something, as in 「都市の変容」; leans toward written style.
• Related変更へんこうNeutralChanges that people make on purpose, as in 「予定を変更する」; a transitive word, whereas 「変動」 simply describes how prices or conditions shift.
• RelatedチェンジNeutralLoanword for swapping or renewing something, as in 「イメージチェンジ」; common in casual speech.
• Related変わりようかわりようNeutralThe way something has changed, as in 「その変わりようには驚いた」; focuses on the state after the change.
• Antonym安定あんていNeutralStability or steadiness; the direct opposite of 「変動」.
• Antonym固定こていNeutralKeeping something fixed or constant, as in 「固定相場」 (a fixed exchange rate); the opposite of the movement 「変動」 implies.
• Antonym不変ふへんNeutralNever changing, as in 「不変の価値」; contrasts with 「変動」, which implies movement.

Use 「変動」 for movements in prices, conditions, or the natural environment, as in 「株価の変動」 and 「地殻変動」. For change in general say 「変化」, for long-term evolution 「変遷」, and for deliberate changes 「変更」. 「変わる」 is the everyday verb, 「移り変わり」 and 「移ろい」 evoke the passage of time, and 「安定」 and 「固定」 are the opposites.

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

1. 状態じょうたいが、動うごき、変かわること。
2. 事態じたいの大おおきな変化へんか。