The question asks us to find the word that is spelt INCORRECTLY among the given options. Let's examine each word carefully.

Analyzing English Word Spellings

We need to check the spelling of each word provided in the options to identify the one that is not spelt correctly according to standard English spelling rules.

• celebrate: This word means to mark a special event with festive activities. The spelling 'c-e-l-e-b-r-a-t-e' is correct.
• separate: This word means to divide or disconnect. The spelling 's-e-p-a-r-a-t-e' is correct. This word is often a source of common spelling errors, where people might mistakenly write 'seperate'.
• celibate: This word describes a person who abstains from marriage and sexual relations. The spelling 'c-e-l-i-b-a-t-e' is correct.
• segragate: Let's look at this word. The sound suggests a division or setting apart. The correct spelling for this meaning is 's-e-g-r-e-g-a-t-e'. Therefore, 'segragate' is spelt incorrectly.

Identifying the INCORRECTLY Spelt Word

Based on our analysis, three of the words are spelt correctly ('celebrate', 'separate', 'celibate'), while one word, 'segragate', is spelt incorrectly. The correct spelling is 'segregate'.

The word 'segregate' means to set apart from the rest or from each other; isolate or divide.

So, the INCORRECTLY spelt word is 'segragate'.

Revision Table: Key Spelling Points

Additional Information: Common Spelling Errors

Misspelling words is a common issue in English. Many errors occur in words with similar sounds or tricky vowel combinations. Focusing on common difficult words can significantly improve spelling accuracy. Words like 'separate', 'definite', 'receive', 'believe', 'occurrence', and 'government' are often misspelt. Learning root words and common prefixes/suffixes can also help. Practice and careful proofreading are essential for avoiding spelling mistakes.