without nervousness, as in emergencies; calm; collected.

lacking strength or vigor; feeble; weak.

lacking firmness or courage; spiritless; cowardly.

Anatomy, Botany . having no nerves.

adjective

disconcerted , nervous , brave , courageous , nervy , unafraid

adjective

collected , composed , controlled , imperturbable , intrepid , patient , self-possessed , tranquil , unemotional , afraid , cowardly , debilitated , enervated , fearful , feeble , nervous , petrified , spineless * , timid , weak , yellow-bellied , calm , cool , dead , inert , powerless , spineless , spiritless