IPA: /ˈtɒlərəbli/
KK: /ˈtɑːlərəbli/
In a way that is acceptable or bearable, but not great or excellent.
The movie was tolerably entertaining, but I expected more.
Tolerably → It is formed from "tolerare" (meaning to bear or endure) and the suffix "-ably" (meaning in a manner that is). The word "tolerably" means in a manner that can be endured or accepted.
Think of 'bearing' or 'enduring' something — that's what 'tolerably' means, to accept something in a way that is bearable.