[ lawng-suh m, long- ]
/ ˈlɔŋ səm, ˈlɒŋ- /
tiresomely long; so protracted as to weary or cause boredom.
Related formslong·some·ly, adverblong·some·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for longsome
Their negotiation was longsome; for both England and we, fearing deceit, sought by all means that the contract should be sure.
At the table a game of chess to play, Will help to beguile the longsome day.Finnish Arts|Anonymous