IPA: /ˈstɒlɪdli/
KK: /ˈstɑːlɪdli/
In a way that shows little emotion or reaction; calmly and without excitement.
He stolidly accepted the news without showing any signs of distress.
Stolidly → It is formed from "stolidus" (from Latin, meaning dull or unresponsive) and the adverbial suffix "-ly" (meaning in a manner of). The word "stolidly" means in a manner that is dull or unresponsive, showing little emotion or reaction.
Think of someone acting in a 'dull' manner ('stolidus') — that's why stolidly means doing something without much emotion.