fearfully
Fearfully is an English adverb formed from the adjective fearful. It describes an action performed in a manner characterized by fear, anxiety, or apprehension, and can also convey awe or reverence in certain contexts. In everyday usage it is more common in formal, literary, or historical writing than in casual conversation.
Etymology and usage: The word comes from fear + -ful to form the adjective fearful, with the adverbial
Usage notes: Fearfully typically modifies verbs or adjectives to indicate that the action or state is experienced