worrisome Synonyms

troubling distressing disturbing worrying distressful alarming perturbing trying troublous troublesome sad painful pesky taxing serious tiresome unnerving unsettling unreassuring cringeworthy nerve-wracking nerve-racking worry weighty vexatious vexing upsetting oppressive onerous disconcerting difficult demanding daunting creepy concerning burdensome bothersome annoying agitating dismaying disquieting niggling nagging maddening irritating irksome heavy harassing galling frightening