The most common informal abbreviations

Idk - I don`t know

Idc - I don`t care

BTW- By the way

RN- Right now

GR8 - Great

NP - No problem

W8 - Wait

FYI - For your information

ASAP - As soon as possible

DIY -  Do it yourself

VR- Virtual reality

CEO - Chief Executive Officer

RIP - Rest in peace

Thx -  Thanks

ATM- Automated Teller Machine

2MORO- Tomorrow

2DAY - Today

Tbh - To be honest

Xmas - Chrisrmas