trou·ble·some 
/ˈtrʌbəlsəm/ adjective
/ˈtrʌbəlsəm/ adjective [more troublesome; most troublesome] : causing problems or worry : causing trouble
▪ a troublesome infection ▪ troublesome children
▪ a troublesome infection ▪ troublesome children
— trou·ble·some·ly adverb
— trou·ble·some·ness noun [noncount]
