Spelling rule confusion, when to apply 'ly' or 'lly'! Please Help!!?

Question

Hey, I wanted to know if there was any rule of applying 'ly' or 'lly' at the end of a word, when would we know which one to apply.
As in most with words that end with an 'l' we just add 'ly'
example
actual becomes actually
mutual becomes mutually

but are there any words that end with an 'l' but we only add a 'y' without adding the second 'l'
example, IF actual were to become actualy!

PLEASE HELP!
And, thanks!

Answer 1

Well 'actual' and 'mutual' already end in 'l', so you are just adding -ly.



There are no adjectives I can think of that end in l where the l gets deleted...that would be silly!

Answer 2

Adding Ly To A Word

Answer 3

Both of the answers given are correct. You only add ly. When a word ends with l, you are only adding ly to it.

Answer 4

I don't believe so. To make a word an adverb you add -ly.