The phrase "a big indication" is correct and usable in written English.
It can be used when referring to a significant sign or piece of evidence that suggests something.
Example: "The sudden drop in sales is a big indication that we need to reevaluate our marketing strategy."
Alternatives: "a strong sign" or "a clear indication".
A big indication that the tectonic plates of the virtual world were shifting was the bid of the highflying America Online to acquire the landlocked Time Warner.
Japanese people say they take heart from such commendations.As for the future, Hideaki Shiroyama, a public-policy expert at the University of Tokyo, says a big indication of Japan's willingness to shake off its lethargy will be the inevitable debate on nuclear energy that emerges from the disaster.
"It's a big indication that 'we want you specifically,' and that cannot be belittled".
This can be a big indication of whether or not he's really into you.
This can be a big indication of how he really feels about you.
The things you say to the guy, or even the things you talk about when you're not around the guy, can be a big indication of whether or not you have a crush on the guy.
When the players carried their post-game celebration through the tunnel of the National Indoor Stadium, a bigger indication of the victory's magnitude followed.
"This is a big step and a great indication of what's happening in the industry," said Marc Andreessen, chairman of Opsware Inc., a supplier of software for automating data center operations.
Is there any bigger indication of what a nation of absolute whoppers we've become than this nascent "tradition"?
As if releasing a memoir at the age of 16 wasn't a big enough indication of Justin Bieber's hubris, we just found out he's releasing a 3D (yes, 3D) documentary about himself called "Never Say Never".
When Austrians finally wanted to rid themselves of the coalition, they turned to Jörg Haider's far-right Freedom Party of Austria in the nineties — perhaps the first big indication of Europe's populist turn.
