Common English Abbreviations and Acronyms

Common English Abbreviations and Acronyms

Short forms used every day in texting, internet, work, and casual English (2025–2026)

Everyday & General Abbreviations 

• 1. Mr. - Mister  
• 2. Mrs. - Mistress (married woman)  
• 3. Ms. - Miss  
• 4. Dr. - Doctor  
• 5. Prof. - Professor  
• 6. Etc. - Et cetera (and so on)  
• 7. E.g. - Exempli gratia (for example)  
• 8. I.e. - Id est (that is)  
• 9. Vs. - Versus (against)  
• 10. Approx. - Approximately  
• 11. No. - Number  
• 12. Dept. - Department  
• 13. Govt. - Government  
• 14. Inc. - Incorporated  
• 15. Ltd. - Limited  

Texting & Internet Slang

• 16. LOL - Laughing out loud  
• 17. BRB - Be right back  
• 18. OMG - Oh my God/Goodness  
• 19. TTYL - Talk to you later  
• 20. BTW - By the way  
• 21. IDK - I don't know  
• 22. FYI - For your information  
• 23. TBH - To be honest  
• 24. SMH - Shaking my head  
• 25. IMHO - In my humble opinion  
• 26. LMK - Let me know  
• 27. NVM - Never mind  
• 28. OOTD - Outfit of the day  
• 29. ROFL - Rolling on the floor laughing  
• 30. TMI - Too much information  
• 31. YOLO - You only live once  
• 32. FOMO - Fear of missing out  
• 33. BFF - Best friends forever  
• 34. GR8 - Great  
• 35. L8R - Later  ]

Business & Professional

• 36. ASAP - As soon as possible  
• 37. CEO - Chief Executive Officer  
• 38. CFO - Chief Financial Officer  
• 39. COO - Chief Operating Officer  
• 40. CTO - Chief Technology Officer  
• 41. HR - Human Resources  
• 42. PR - Public Relations  
• 43. ROI - Return on Investment  
• 44. KPI - Key Performance Indicator  
• 45. B2B - Business to Business  
• 46. B2C - Business to Consumer  
• 47. EOD - End of Day  
• 48. COB - Close of Business  
• 49. ETA - Estimated Time of Arrival  
• 50. TBD - To Be Determined  
• 51. P&L - Profit and Loss  
• 52. CPM - Cost Per Mille  
• 53. YTD - Year to Date  
• 54. WFH - Work From Home  
• 55. PTO - Paid Time Off  

Technology & Online

• 56. AI - Artificial Intelligence  
• 57. API - Application Programming Interface  
• 58. CPU - Central Processing Unit  
• 59. DM - Direct Message  
• 60. FB - Facebook  
• 61. IG - Instagram  
• 62. URL - Uniform Resource Locator  
• 63. WWW - World Wide Web  
• 64. SEO - Search Engine Optimization  
• 65. VPN - Virtual Private Network  
• 66. HTML - HyperText Markup Language  
• 67. PDF - Portable Document Format  
• 68. APP - Application  
• 69. OS - Operating System  
• 70. UI - User Interface

Internet & Social Media Classics

Abbreviation - Meaning - Usage level

• ASAP - As soon as possible - Very high
• FYI - For your information - Extremely common
• TBC - To be confirmed - Meetings
• TBD - To be determined / decided - Very common
• EOD - End of day - Office classic
• OOO - Out of office - Email auto-reply
• N/A - Not applicable / Not available - Forms & spreadsheets
• Re: - Regarding (in email subject) - Still used
• cc / bcc - Carbon copy / blind carbon copy - Email
• KPI - Key Performance Indicator - Business
• ROI - Return on Investment - Business
• SME - Subject Matter Expert - Corporate
• WFH - Work from home - Still very common
• RTO - Return to office - Hot topic 2024–2026 

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