fearful

1 ENTRIES FOUND:
fearful /ˈfiɚfəl/ adjective
fearful
/ˈfiɚfəl/
adjective
Britannica Dictionary definition of FEARFUL
[more fearful; most fearful]
1 
: feeling fear — often + of
— sometimes + for
3 
: very bad or extreme
4 
: causing fear

— fearfully

adverb

— fearfulness

noun [noncount]