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unevenness (of colour, paint, etc.); irregularity; nonuniformity; blotchiness
unevenness (of quality, results, behaviour, etc.); inconsistency; instability
fickleness; capriciousness; fitfulness
ペンキの塗り方にむらがあると仕上がりが汚く見える。
If the paint is applied unevenly, the finish looks messy.
彼の仕事にはむらがあり、出来が日によって異なる。
His work is inconsistent, with quality varying from day to day.
焼き加減にむらがあったため、一部が焦げてしまった。
The baking was uneven, so parts of it got burnt.