worrisome Synonyms

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