gripe
n.a small, annoying problem or complaint. You use this when you want to sound a bit more serious than just saying 'complaint'.
n.a complaint or grievance, typically one that is minor or trivial in nature.
“The only gripe I have is the slow internet.”
“While the car is otherwise reliable, the owner has a few minor gripes about the interior lighting.”
“The software update was generally well-received, though users voiced several gripes regarding the new interface's lack of customization options.”
“As mentioned, perhaps the biggest gripe at that stage was that Brentford’s lead wasn’t greater.”
From Middle English gripen, from Old English grīpan, from Proto-Germanic grīpaną, from Proto-Indo-European gʰreyb- (“to grab, grasp”). Cognate with West Frisian gripe, Low German griepen, Dutch grijpen, German greifen, Danish gribe, Swedish gripa. See also grip, grope.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.