taxing Synonyms

burdensome onerous back-breaking thorny testing taxation taxability tasking superincumbent superincumbency stressful strenuous severe serious sad rugged tiring tithe toilful unbearable gruelling grueling backbreaking worrisome weighty wearying wearing uphill trying troublesome tough tolling toilsome rough rigorous exacting draining disturbing dire difficult demanding delation debilitating cruel complicated charging challenging bothersome arduous exaction