IPA: /ˈbrɪtəli/
KK: /ˈbrɪtəlɪ/
In a way that is easily broken or damaged; lacking flexibility.
The glass shattered brittlely when it hit the floor.
Brittlely → It is formed from "brittle" (from Old English "bryttel", meaning easily broken) and "-ly" (meaning in a manner of). The word "brittlely" means in a manner that is easily broken or fragile.
Think of something that is 'easily broken' ('brittle') and how it behaves 'in a manner of' ('-ly'). This helps you remember that 'brittlely' describes a fragile way of being.