Dear ssnagesh. It looks like you need an Oxford, Chambers, Collins, dictionary at home, let alone on-line.
UK English dictionary apps are few and far between, and I think Brave are too concerned with getting more basic issues right first, and finish the decorations after they’ve fully baked the cake.
There are one or two apps/programs that you can install on your computer, and check items against those, but they are a bit time consuming. I have been using languagetool.org’s application, and I’ve found that very helpful. It’s supposed to install on Chrome, but I think Brave is too far removed now for that to work.
If you have a long matter to write about, then Grammarly might suit you; It’s good, but you get too many ads and interruptions with the free version.
As I sometimes say:- ‘ave a nice diy, me ol’ china.