Neuter of the compound of a derivative of the base of tolmao (as adverb); more daringly, i.e. With greater confidence than otherwise -- the more boldly.
KJV: Nevertheless, brethren, I have written the more boldly unto you in some sort, as putting you in mind, because of the grace that is given to me of God,
NASB: But I have written very boldly to you on some points so as to remind you again, because of the grace that was given me from God,