The phrase "a definite move" is correct and usable in written English.
It can be used to describe a clear or certain action taken in a specific context, often implying intention or purpose.
Example: "The company's decision to expand into new markets was a definite move towards growth and innovation."
Alternatives: "a clear step" or "a certain action".
I think there was a definite move last season to sort of brighten him up.
But there has been a definite move in many big cities away from thuggishness as the rule and toward more enlightened, more effective strategies.
"It is creating a feeling of alienation and there is a definite move away from integration and towards more concentrated areas in towns and cities where Muslims choose to live".
"Our plan is that he'll stay here," Allofs said – but it sounded like a declaration more of hope than expectation and a definite move away from the "not for sale" message of a few weeks ago.
"This year we are seeing a definite move away from the true novelty style of Christmas jumper, in favour of more tasteful knitwear such as fair isles and embellishment.
"There's a real renaissance in comedy which is probably due to a general feeling of stress and, while I'd hesitate to make a strong correlation between a feeling that when the economy is down people want to lose themselves in escapism, I also do think that there's a definite move towards this kind of show.
"There's a definite moving away from that pro-business standpoint.
There's little doubt today, at least based on OS X and Linux adoption figures that there is a very real and definite move away from Microsoft, accelerated by the disaster that is Vista.
The bond market advanced throughout February largely in anticipation of some definite move away from severe credit restraint, but so far the central bank has kept a tight grip on the monetary reins.
After six years afflicted by the credit-crunch, there's a definite window to move up or move on in 2014 before the market's usual pre-election pause in early 2015.
In addition to invoking an issue that Republicans have seized on in election after election over the past two decades -- tax cuts -- Mr. Lazio today seemed to be making a definite effort to move away from Mr. Bush's tax cut plan, if not the Republican presidential candidate himself.
