step change 
noun
(In business or politics) a significant change in policy or attitude, especially one that results in an improvement or increase.There has been a step change in politics in this country since the war on Iraq, and the movement against it....
- The Commission says the Government's 10-year transport plan - published last year - offers ‘long awaited focus on integrated policies and a step change in levels of investment’.
- We look at companies that are looking to raise capital to fund a step change in their business.
- gray suit
- Gray, Thomas
- gray trout
- graywacke
- voice flute
- voice frequency
- voiceful
- voice leading
- voiceless
- voicelessly
- voicelessness
- voicelet
- voice level
- voicemail
- voice mailbox
- voicemail box
- voice memo
- voice message
- voice messaging
- voice-music
- Voice of America
- voice onset time
- voice-operated
- voice-over
- voice part