単調|たんちょうtanchou[0]heiban (flat)

1. na-adjective, nounmonotony; monotone; dullness
   この話はなしはちょっと単調たんちょうだ。↗

   This story is rather monotonous.
2. noun, na-adjective, mathmonotone; monotonic

• Synonym平板へいばんWrittenWritten-style noun for prose that is flat and dull, or for a flat, unaccented pitch. 「単調」 covers any dull lack of variety, not just writing and speech.
• SynonymモノトーンNeutralLoanword for one color or its shades, as in black-and-white photos; common in fashion and design. 「単調」 can describe colors too, but means lacking variety, not monochrome.
• Synonym一本調子いっぽんぢょうしNeutralNoun for an unchanging, stiff tone or manner of speaking, as in 「一本調子な話し方」. It targets speech and delivery; 「単調」 covers any dull lack of variety.
• Synonym単調さNeutralNoun form focusing on monotony as a quality and its degree. Use it to talk about how monotonous something is; 「単調」 describes the thing directly.
• Related均一きんいつWrittenWritten-style noun for uniformity — no differences in amount or degree, as in 「均一料金」. Unlike 「単調」, it carries no sense of dullness.
• RelatedフラットNeutralLoanword for flat and even, with no rises or falls; also 'exactly' as in 10 seconds flat. It stresses flatness, while 「単調」 stresses dullness from lack of variety.
• Antonym多様たようWrittenWritten-style noun for being varied, with many different kinds — the direct opposite of 「単調」.
• Antonym変化へんかNeutralNoun for change or variation, as in 「変化に富む」. It names the changes themselves, standing opposite to the unchanging dullness of 「単調」.

Use 「単調」 for anything dull from lack of variety, as in 「単調な作業」. For flat speech try 「一本調子」, dull writing 「平板」, uniformity 「均一」, one-color 「モノトーン」, flatness or exact time 「フラット」. 「単調さ」 names the quality; opposites are 「変化」 and 「多様」.

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

1. 同おなじような調子ちょうしが続つづき、変化へんかの少すくない様子ようす。