"Sometimes things are said on the field but they should stay on the field", Root explained.
He dismissed Shai Hope and Roston Chase off successive deliveries, both taken at gully, in his opening over and added the scalp of Shimron Hetmyer, caught at the second attempt by England captain Joe Root at first slip, off the final delivery of the afternoon session. He later claimed the wicket of Root - caught at midwicket - to signal an England declaration.
Asked if Gabriel had crossed the line of acceptability, Root said: "I think it should stay on the field".
Tensions boiled over as Joe Denly and Root frustrated the West Indian bowlers and the latter was heard telling Gabriel: 'Don't use it as an insult - there's nothing wrong with being gay'.
West Indies' coach Richard Pybus said he was not aware of what transpired but promised to address the issue if anything "untoward" was said.
"The guys understand the legacy of West Indies cricket and they want to continue to inspire the next generation of cricketers to play the game".
The difficulty for the ICC will be in proving what Gabriel, a man who mumbles at the best of times, said given that it has not proved audible to either on-field technology or the match officials.
"The battle was a good contest, he's had a wonderful series and he should be proud".
Former England captain Nasser Hussain agreed.
The third and final Test gets underway at the Daren Sammy Cricket Ground in St Lucia on Saturday. "It was a good job I didn't take my pads off", he said after with a smile. "This calm and firm response will make a difference in ways we may never see and never know", she tweeted.
Worse was the follow for the West Indies when Darren Bravo, troubled by a finger injury which kept him off the field for the entire England second innings, followed a delivery from Anderson for Root to complete a comfortable catch at first slip.