English Spelling Rules and Patterns (With Exceptions)

English spelling is less random than it looks: a small set of rules for adding endings, forming plurals and spelling certain sounds covers a large share of everyday words. Double the final consonant in stop to get stopped, drop the e in make to get making, change the y in happy to get happiness, and write ck after a short vowel in back but k after a long one in bake. The rules have exceptions, and a few famous ones (like "i before e") are weaker than their reputation, so each section below lists the rule, the common exceptions and a quick test.

Spellings follow American English, with British differences noted.

Rule 1: doubling the final consonant

When you add a suffix that starts with a vowel (-ed, -ing, -er, -est, -able), double the final consonant if all three conditions hold:

• the word ends in a single vowel plus a single consonant,
• the final syllable is stressed (one-syllable words always count),
• the consonant is not w, x or y.

A stress shift inside the word family can change the result. Refer doubles (referred), but reference does not, because the stress moves to REF-: the -ence ending no longer follows a stressed syllable. Prefer and preference work the same way.

British English breaks the stress condition for a final l: travel, travelled; cancel, cancelled; label, labelled. American English applies the rule strictly: traveled, canceled, labeled.

Rule 2: dropping the silent e

Drop a silent final e before a suffix that begins with a vowel, and keep it before a suffix that begins with a consonant.

Exceptions you will meet often:

• Keep e after soft c or g before a or o, so the letter stays soft: noticeable, manageable, changeable, courageous, outrageous.
• Keep e to avoid confusion with another word: dyeing (coloring) versus dying (from die); singeing versus singing.
• Keep e in -ee, -oe and -ye endings: agreeing, seeing, canoeing, eyeing.
• Drop e before a consonant suffix in a few common words: argue, argument; true, truly; nine, ninth; whole, wholly; awe, awful.
• Judgment and acknowledgment are the usual American spellings; British English commonly writes judgement and acknowledgement.

Rule 3: y to i

After a consonant, change a final y to i before any suffix except one starting with i.

After a vowel, y stays: play, played; enjoy, enjoyment; key, keys; buy, buyer. The common exceptions are three irregular past tenses and one adverb: pay, paid; say, said; lay, laid; day, daily.

Rule 4: plurals and third-person -s

Quiz doubles its z (quizzes), following the same logic as Rule 1. A handful of old plurals must simply be learned: child, children; man, men; woman, women; foot, feet; tooth, teeth; mouse, mice; person, people; sheep, sheep; fish, fish.

Rule 5: i before e (and where it fails)

The rhyme "i before e except after c" is true only for words where the pair makes an ee sound, and even then not always.

The last row shows why the rhyme misleads: in science, species and efficient, ie comes straight after c. Treat the rule as a hint for the ee sound only.

Rule 6: spellings that depend on the vowel before them

Several consonant sounds have two spellings, and the choice depends on whether a single short vowel comes right before.

This is also why short-vowel words double consonants in the middle (hopping, dinner, rabbit) while long-vowel words do not (hoping, diner). Compare hopping (from hop) with hoping (from hope), and dinner with diner.

Rule 7: soft c and soft g

The letters c and g are usually soft (sounding s and j) before e, i or y, and hard (k and g) before a, o, u or a consonant.

Soft c is very regular. Soft g has many well-known exceptions, including get, give, girl, gift, begin, tiger, target, gear and geese, so treat it as a strong tendency rather than a rule.

This rule explains two other spellings. It is why notice keeps its e in noticeable (ce keeps c soft before a), and why the unstressed endings -ant and -ent can sometimes be predicted: a hard c or g takes a (significant, vacant, elegant, arrogant), while a soft c or g takes e (magnificent, innocent, intelligent, diligent).

Rule 8: -able versus -ible

Use -able when the root is a complete English word and -ible when it is not. This tendency covers most common cases.

Exceptions include flexible, accessible, digestible and collapsible, which add -ible to whole words. Words formed from a verb ending in -ate often drop it and take -able: tolerate, tolerable; demonstrate, demonstrable.

Rule 9: -cede, -ceed and -sede

Only one word ends in -sede (supersede), and only three common words end in -ceed (exceed, proceed, succeed). Every other word with this sound ends in -cede: precede, concede, recede, intercede, secede. Note that proceed becomes procedure, dropping one e.

Rule 10: words do not end in v, and rarely in plain i or u

A final v sound is almost always spelled -ve in English: have, give, live, love, glove, above. That e does not make the vowel long, which is why have and give do not rhyme with cave and five. Words also rarely end in a plain i or u, using y, ie, ue or ew instead: my, pie, blue, true, few (you is the famous exception). Words that do end in i or u, such as taxi, ski, menu, emu and tofu, are mostly borrowings or shortened forms.

Patterns that come from word families

Many "silent" letters are not random at all. They belong to a root that is pronounced in a related word, so learning the family explains the spelling.

Word families also rescue spellings hidden by schwa, the unstressed "uh" vowel: definite has an i because define does, and grammar has an a because grammatical does. Our guide to the schwa sound lists more pairs, and our map of roots and affixes shows how families are built.

Spelling patterns with no rule: -ough

The letter group ough has several pronunciations and no rule chooses between them. Learn it word by word:

American English often writes plow for plough, and informal American spelling sometimes uses thru and tho, which are not accepted in formal writing.

American and British spelling differences

Pick one system and stay consistent within a document.

Frequently misspelled words and a hook for each

Homophones cause a separate set of errors (their, there, they're; its, it's; affect, effect), which we cover in homophones and homographs.

How to practice spelling patterns

Sort by rule. Collect twenty words from your reading and sort them into columns: doubled (stopped), dropped e (making), y to i (studied), unchanged (played). Words that fit no column are your personal exception list.

Write the family. For each tricky word, write two relatives: define, definite, definition; compete, competition, competitive. The stressed form tells you the hidden vowel.

Spell from sound. Listen to a word before seeing it and write it using the rules, then check. Games that make you produce spellings, such as word ladders, anagrams and crosswords, give the same practice in a lighter form; see our overview of vocabulary games. WordFren pairs each word's spelling with its audio, which helps connect the two, and the word of the day is a good daily candidate for a spell-from-sound test.