What word can you NEVER spell? Even if you're good at spelling

[Geebray]

I am good at spelling. Can do really long words. But two words I can never spell, no matter how hard I try:

Brocolli and cappucino

definitely and vacuum

Calender
Definitely
Available
Diarrhoea

They are my worst.

Reciept

Ugh. Receipt

I was convinced that dilemma had an N in it 🙈🙈🙈

Dilemna!