The general rule for this is when there is a one syllable word there is a single vowel followed
by a single consonant at the ending, the ending of a consonant is
doubled before a suffix beginning with a vowel. -WarriorConcerto
RULE: 1 - When a word ends with a consonant and the suffix begins with a consonant, just add the suffix with no spelling changes. RULE: 2 - For most words ending in a single consonant you need to double the last letter when you add suffixes.
