also: おおめいわく
noun, na-adjective
great inconvenience; major nuisance; royal pain
Used for situations or actions that cause significant trouble or annoyance to others. Often used in complaints or apologies.
電車の遅延は通勤客にとって大迷惑だ。
Train delays are a great inconvenience for commuters.
彼の無責任な行動は周囲に大迷惑をかけた。
His irresponsible behavior caused a great deal of trouble for those around him.
迷惑 is a general term for trouble or annoyance, while 大迷惑 emphasizes a greater degree of inconvenience or nuisance.
Compound of 大 (だい, 'big, great') + 迷惑 (めいわく, 'trouble, annoyance').