IPA: /ˈdʌmli/
KK: /ˈdʌmli/
In a way that shows a lack of intelligence or understanding; foolishly or without thought.
He stared dumbly at the complicated instructions, unsure of what to do next.
Dumbly → The word is derived from "dumb" (from Old English "dumb", meaning unable to speak) and the suffix "-ly" (meaning in a manner of). Thus, "dumbly" means in a manner that is unable to speak or silently.
Think of someone who is 'unable to speak' ('dumb') and doing so 'in a manner' ('-ly'). This helps you remember that 'dumbly' refers to acting in a silent or speechless way.