How to add endings to words that end in a double "l"

You need to drop the final l from words that end with a double l before adding endings that begin with a consonant (e.g. -ment, -ful, and -ly):

The ending -ness is an exception to this rule:

Back to spelling.

You may also be interested in

Adding endings to words that end in -our

Adding endings to words that end in -y

See more from Spelling