Comparative form of mighty: more mighty(adjective)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "mightier" in a sentence
"Yes, I am happy, most happy, that I can weep thus for imaginary sorrows, and that the slight loss of my adored country is not dwindled and annihilated in mightier misery."
"Mike Luckovich showed east and west arguing, "sword mightier" -- "pen is.""
"So Christ himself represents all attempts to extirpate evil from humanity and from the individual man as futile, if the inward might of evil be not first broken by the power of the mightier, which is Christ, — by the finger of God."