平板|へいばんheiban[0]heiban (flat)

1. nounflat board; slab; slat; plane table
2. na-adjective, nounmonotonous; dull; flat; boring
3. noun, linguisticseven pitch; accentless pitch; Japanese pitch accent pattern with no drop from high to low pitch

• Synonym単調たんちょうNeutralMonotonous and lacking variety; a common everyday word, the closest match to the figurative sense of 「平板」.
• SynonymフラットNeutralLoanword for flat and even; also the flat sign in music and 'exactly', as in 「10秒フラット」. 「平板」 usually means dull and monotonous.
• Related均一きんいつNeutralUniformity in quantity or degree; a neutral description with no hint of dullness.
• Related一本調子いっぽんぢょうしNeutralSpeech or melodies with an unchanging tone; stresses a single, flat voice or tune.
• Antonym起伏きふくNeutralUps and downs in terrain or twists and turns in life; the opposite of flat, even 「平板」.
• Antonym凹凸おうとつNeutralA bumpy, uneven surface; the opposite of smooth, flat 「平板」.

For writing or performances that lack variety, use 「単調」 or 「平板」; a flat, even board is also 「平板」. 「一本調子」 stresses a flat tone of voice, 「均一」 is neutral uniformity, 「フラット」 covers flatness, the musical flat and 'exactly'; 「起伏」 and 「凹凸」 are its opposites.

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

1. 平たいらな板いた。特とくに測量そくりょうで、製図せいず用ようの紙かみを貼はる平たいらな板いた。
2. 単調たんちょうでおもしろみのないさま。変化へんかに乏とぼしいさま。