-ous- Suffix Spelling Practice (our to or)

Year 4 Spelling Practice – Suffix -ous (Changing -our to -or ) Help your Year 4 pupils explore more advanced suffix rules with this spelling worksheet focusing on words where -our is changed to -or before adding the suffix -ous. This resource highlights an important pattern in adjective formation and offers visual support to reinforce spelling retention. Target words: vigorous humorous glamorous Pupils will: Read the words Cover them Write the correct spelling under the matching image Underline the key spelling focus Spelling rule included: “The suffix –ous: sometimes the root word is obvious and follows usual rules. When the root ends in -our, it changes to -or before adding -ous.” This worksheet helps children recognise suffix patterns, apply rules with confidence, and deepen their understanding of word formation. Perfect for: Year 4 grammar and spelling lessons Vocabulary extension and suffix practice Visual learners and independent work Homework or reinforcement tasks What’s included: One PDF worksheet featuring three -ous words Picture prompts to aid comprehension A clear explanation of the -our to -or rule A valuable addition to your collection of suffix-focused spelling resources.