requiring immediate action or aid; urgent; pressing.

requiring a great deal, or more than is reasonable.

adjective

ordinary , unpressured , usual , easy , facile

adjective

acute , burning , clamant , clamorous , constraining , critical , crucial , crying , imperative , importunate , insistent , instant , menacing , necessary , needful , threatening , arduous , burdensome , demanding , exacting , grievous , hard , harsh , onerous , oppressive , rigorous , severe , stiff , strict , stringent , superincumbent , tough , weighty , dire , emergent , pressing , urgent , backbreaking , difficult , effortful , formidable , heavy , laborious , rough , taxing , trying , vital