3 ms·

I'd have said the opposite. I'm in my mid 50s and always spell it out; while most people I know in their 20s use "OK."

• OJFord 9y ago
  I don't think it's generational at all - it's just whether you prefer to write something that looks more like a 'real' word.
  • Ajedi32 9y ago
    Yep. Depending on context I might write "okay", "ok", "kk", or just "k". All depends on who I'm writing to and how formal I want to be.