lesson generalization: when you add a suffix beginning with a vowel to a word ending with a silent E, drop the E. When you add a suffix, beginning with a consonant to a word ending in silent E, keep the E

Examples

sincere-sincerely

secure-securely

active-activity

separate-separately

name-naming

close-closely

waste-wasting

hope-hoping

care-careful

forgive-forgiveable

like-likeness

move-movable

require-requirement

sincerely   naming   careful   requirement   involving   securely   closely   forgivable  settling amazing   activity   wasting   likeness   placement   advancing   separately   hoping   moveable   measurement   improving