Russian-English translations for эффективный

effective
us
The pill is an effective method of birth controlThe president delivered an effective speech!How long does it take to make a bunch of civilians an effective military force?
efficaciousThis medicine is efficacious

efficient
us
An efficient process would automate all the routine workOur cleaners are almost too efficient: they throw away anything left out on a deskThe motor is only 20% efficient at that temperature
high-performanceThe new high-performance computer can run all the new software and games.