Indian English is spoken by over 125 million people and it does not do the needful of following British rules anymore. It has its own swagger, from "prepone" to "timepass" to calling everyone "yaar". Decades of Bollywood, cricket commentary and IT culture have made it a variety that slaps different.
Yaar
Means friend, buddy, or mate. From Hindi and Urdu, it is the default term of address among mates across South Asia and the Indian diaspora. Drop it at the start or end of a sentence for instant warmth. You can plead with it, joke with it, or use it to soften bad news. Yaar is how you remind someone you are in this together.
Achha
A wildly flexible Hindi word that can mean alright, good, oh really, or okay I get it, depending on the tone. A flat achha is calm acknowledgement. A rising achha is real curiosity. A stretched achha usually means yeah, I'm not buying that. In Indian English and Hinglish, it's the tiny conversational wizard-tool that keeps the whole chat humming.
Prepone
To prepone something is to move it earlier. It’s the tidy opposite of postpone, and in Indian English it’s completely normal in office chat, travel plans, school admin, the whole timetable circus. Meetings get preponed, flights get preponed, deadlines too. First time you hear it, your brain usually goes yep, that tracks.
Chakka jam
A chakka jam is a proper Indian English way to say the traffic's fully locked up. Not just slow, not just annoying, fully seized. Cars, buses, autos, everybody's sitting there aging in real time while the road forgets it's meant to move. You'd use it when the jam is so brutal you're basically parked with ambitions.
Do the needful
A politely firm way of saying please handle whatever needs doing. You see it all over Indian business English, office chats, support tickets, and family admin messages. It can sound old-school to British ears, but in practice it's crisp, efficient, and usually means sort this out properly without making me follow up three more times.