unbelievingly
/ˌʌnbɪˈlivɪŋli/
adverb
- In a way that shows doubt or lack of belief.
- She shook her head unbelievingly when she heard the outrageous rumor.
- The child looked at the huge elephant unbelievingly, unable to process its size.
- He stared at the winning lottery ticket unbelievingly.
Antonyms