mistakesintermediateuniversal
Rentner
/ˈʁɛntnɐ/
Retiree (NOT: renter)
When to use it
Looks like 'renter' but means 'pensioner / retiree'. A renter is 'Mieter'.
In conversation
—Mein Vater ist seit letztem Jahr Rentner.
“—My father has been retired since last year.”