mightily

adverb

might·​i·​ly ˈmī-tə-lē 

1

: in a mighty manner : vigorously

applauded mightily

2

: very much

depressed me mightily

Synonyms of mightily

• extremely
• terribly
• very
• incredibly
• too
• badly
• highly
• greatly
• severely
• so
• damned
• desperately
• damn
• really
• heavily
• wildly
• intensely
• seriously
• far
• immensely
• much
• especially
• fiercely
• that
• jolly

Examples of mightily in a Sentence

They contributed mightily to the cause.

She struggled mightily to read his handwriting.

The soldiers fought mightily before finally surrendering.

Recent Examples on the Web

Darnold was the third overall pick in the 2018 NFL Draft, but struggled mightily in three seasons with the Jets. —Pete Grathoff, Kansas City Star, 27 Jan. 2026

The Patriots’ rookie left tackle struggled mightily against the Texans’ talented pass rush, allowing two sacks and four pressures in his team’s snowy win at Gillette Stadium. —Zack Cox, Boston Herald, 22 Jan. 2026

Even during extended periods of extreme cold, water heaters struggle mightily to maintain temperatures. —Connie Etemadi, Freep.com, 17 Jan. 2026

While the Giants have struggled mightily lately, suffering through three consecutive double-digit loss seasons, the cupboard in New York is far from bare. —Dianna Russini, New York Times, 15 Jan. 2026

Word History

First Known Use

before the 12th century, in the meaning defined at sense 1

Rhymes for mightily

• vitally

Kids Definition

mightily

adverb

might·​i·​ly ˈmīt-ᵊl-ē 

1

: in a mighty manner : vigorously

fought mightily

2

: very much

contributed mightily to the cause