mightily

/ˈmaɪtəli/
adverb
  1. With great strength, force, or power.
    • The knight struck the shield mightily with his sword.
    • The wind blew mightily, bending the trees almost to the ground.
    • She pushed against the door mightily, but it would not budge.
  2. To a great extent; very much.
    • The news pleased the crowd mightily.
    • I struggled mightily to finish the project on time.
    • He was mightily impressed by her performance.
Antonyms