Adjective
fast-acting (comparative faster-acting or more fast-acting, superlative fastest-acting or most fast-acting)
taking effect quickly
Is this a fast-acting cancer?
For fast-acting relief try slowing down. Lily Tomlin
Cognitive therapy is a fast-acting technology of mood modification that you can learn to apply on your own. It can help you eliminate the symptoms and experience personal growth so you can minimize future upsets and cope with depression more effectively in the future. David D. Burns
E1 can destroy computers and communications equipment and it changes too quickly for ordinary surge protectors to provide effective protection against it, although there are special fast-acting surge protectors that will block the E1 pulse. Source: Internet
A fast-acting employee cut the breaker to stop the machine. Source: Internet
Specific medications for asthma are broadly classified into fast-acting and long-acting categories. Source: Internet
Tungsten filament lamps have long been used as fast-acting thermistors in electronic circuits. Source: Internet