In a tardy manner.

Reluctantly; unwillingly; with hesitation.

Late: as, he came unwillingly and tardily.

adverb. In a tardy manner; slowly.

adverb. in a tardy fashion; belatedly; late

adverb. slowly

adverb. without speed (`slow' is sometimes used informally for `slowly')

adverb. later than usual or than expected

"The farmer looked at his intractable guest, and then upon his dutiful son; and the idea tardily passed through his dull brain that the soldiers would be just as dangerous to the welfare of the son as to the visitor."

slowly