What does "fifthly" mean?

In the fifth place; fifth in a row.

What is a synonym for "fifthly"?

Common synonyms include: fifth place, fifth point, in the fifth place, to the fifth point.

adv

adv ·Rare ·Advanced level

Adverb

Adverb

"Fifthly, I just forgot what the first four things were."

From fifth + -ly.