účinlivý

Etymology
From.

Adjective

 * 1)  complaisant, obliging, accommodating, helpful; good-natured; industrious
 * 2)  of a thing, procedures or acts effective, effectual, efficacious, of life industrious, active, of love; participation active
 * 3)  of a person bright quick to learn
 * 4)  of a person as a member of a group useful, valuable
 * 1)  of a thing, procedures or acts effective, effectual, efficacious, of life industrious, active, of love; participation active
 * 2)  of a person bright quick to learn
 * 3)  of a person as a member of a group useful, valuable
 * 1)  of a person bright quick to learn
 * 2)  of a person as a member of a group useful, valuable
 * 1)  of a person as a member of a group useful, valuable