---
title: "Root Words & Inflections"
description: "Identify frequently occurring root words and their inflectional forms (e.g., look/looks/looked/looking), using affixes as clues to word meaning and understanding how suffixes create nouns and adjectiv"
canonical: https://lightmysky.com/learn/english/root-words-and-inflections-mt_UEe3MC5RZc
source: https://lightmysky.com/learn/english/root-words-and-inflections-mt_UEe3MC5RZc.md
retrieved: 2026-10-19
---

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# Root Words & Inflections

Identify frequently occurring root words and their inflectional forms (e.g., look/looks/looked/looking), using affixes as clues to word meaning and understanding how suffixes create nouns and adjectives

Subject: English · Area: Vocabulary · Ages 6 to 9
Page: https://lightmysky.com/learn/english/root-words-and-inflections-mt_UEe3MC5RZc

## Ready when they can

- Identify 'play' as the root in 'played', 'playing', 'player'
- Explain that '-ful' in 'careful' means 'full of care'
- Use '-ness' and '-er' to form nouns from root words: 'sad → sadness', 'teach → teacher'

## Lesson: One Root, Many Words

Many words come from one root word. The root holds the main meaning. When you add small parts to the front or end, the word changes shape, but the root meaning stays the same.

*(drawing: Play, plays, played, and playing all share one root: play.)*

**Example.** Suffixes can turn a root word into a new noun or adjective. Add '-ful' to 'care' and you get 'careful,' which means full of care.

To find a root word, peel off the ending. '-ness' turns a describing word into a noun, like sad + ness = sadness. '-er' can name a person who does something, like teach + er = teacher.

**Recap.** A root word keeps its meaning through every form; suffixes like -ful, -ness, and -er build new words on top of it.

## Practice

24 questions on this page, each with its working shown.

## Needs first

- [Word Parts as Clues](https://lightmysky.com/learn/english/word-parts-as-clues-mt_aw0PldeT_L)
- [Suffixes](https://lightmysky.com/learn/english/suffixes-mt_FYK8m6eHQm)
- [Basic Nouns & Verbs](https://lightmysky.com/learn/english/basic-nouns-and-verbs-mt_yBJyCfhtem)

## Opens up

- [Decoding unfamiliar words](https://lightmysky.com/learn/english/decoding-unfamiliar-words-mt_14OR-MhGJ9)
- [Prefixes and suffixes](https://lightmysky.com/learn/english/prefixes-and-suffixes-mt_HrgDjxcWvf)
- [Word Families and Root Words](https://lightmysky.com/learn/english/word-families-and-root-words-mt_p1imGSFgJT)