Suffix Patterns: Learn English by Word Endings

Suffixes carry grammatical meaning — studying them teaches the language at a deeper level.

Master the top ten English suffixes and you can decode or build thousands of words on sight.

Prefixes change meaning; suffixes change the part of speech. "-tion" turns verbs into nouns. "-ly" turns adjectives into adverbs. Learn ten suffix rules and you parse unfamiliar words instantly.

Quick answer

Master the top ten English suffixes and you can decode or build thousands of words on sight.

What you are trying to do

Suffixes carry grammatical meaning — studying them teaches the language at a deeper level.

Best next step

Words Ending With

Limit to remember

Treat this as a practical aid for the task, not a replacement for professional judgment.

Key points

▸ -tion: verb → noun. Act → action, create → creation, inform → information. One rule, thousands of words.
▸ -ment: verb → noun. Agree → agreement, move → movement, judge → judgement. A softer, often British feel.
▸ -ity: adjective → noun. Pure → purity, rapid → rapidity, able → ability. Academic register.
▸ -ous: forms adjective meaning "full of". Danger → dangerous, fame → famous, poison → poisonous.
▸ -ly: adjective → adverb. Quick → quickly, slow → slowly, happy → happily. The most productive suffix in English.

Examples

-tion mini-set

creation, action, reaction, transformation, communication, information, education, attention — eight words, one pattern.
-ly sensitivity

happily, quickly, bravely, honestly. Every English writer uses -ly adverbs; knowing the pattern lets you coin new ones ("Trumpily") and be understood.
Suffix stacking

"Happiness" = happy + ness. "Unhappiness" = un + happy + ness. Suffixes chain with prefixes to build complex words from simple roots.

When to use which tool

Words Ending With

Study one suffix per week. Generate 20 examples, use each in a sentence, next suffix next week.

Find dictionary words that end with a literal suffix or final letter sequence, with length filters for tighter results.

Frequently asked questions

› Which suffixes are most common?

-s (plural), -ed (past), -ing (progressive), -ly (adverb), -er, -tion, -ment, -ness, -ity, -able. These ten cover most English morphology.

› Do suffixes ever change the root spelling?

Yes — "happy + ly = happily" (y → i). "Hope + ing = hoping" (silent e dropped). Learn the spelling rules alongside.

› How should I use this guide with a Kefiw tool? How-to

Use the guide as the plan and the linked Kefiw tool as the check. Read the steps first, try the move manually, then use the tool to compare outputs, catch edge cases, and decide whether the result actually fits your task.

› What mistake do tool guides help avoid? Troubleshooting

Tool guides help avoid using a utility mechanically without understanding what you are trying to accomplish. Most word, writing, and text utilities are fast, but speed can hide context mistakes. Know whether you are solving a puzzle, cleaning copy, drafting a line, or checking a rule.

› Can a tool guide help me learn the skill? How-to

A tool guide can help you learn if you pause before accepting the output and ask why it worked. Compare your first guess with the tool result, look for the rule or pattern, and repeat that review. Passive copying solves one task; active review builds the skill.