Understanding Correct Spelling

The question asks us to identify the correctly spelt word among the given options. This requires knowledge of common English spellings.

Let's look at the options provided:

• Disguisidly
• Disgiuisedly
• Disgiusedly
• Disguisedly

Analyzing the Word Disguisedly

The word we are looking for is an adverb formed from the past participle of the verb "disguise". The verb "disguise" is spelt D-I-S-G-U-I-S-E. The past participle is "disguised", which is spelt D-I-S-G-U-I-S-E-D.

To form the adverb, we typically add "-ly" to the adjective or past participle. So, the adverb formed from "disguised" is "disguisedly", spelt D-I-S-G-U-I-S-E-D-L-Y.

Evaluating the Options

Now let's compare this correct spelling with the options given:

• Disguisidly: This spelling is incorrect. It uses 'i' instead of 'e' in the final syllable before '-dly'.
• Disgiuisedly: This spelling is incorrect. It has 'giu' instead of 'gui'. The order of letters 'u' and 'i' is wrong.
• Disgiusedly: This spelling is incorrect. It has 'giu' instead of 'gui', and it is missing the letter 'i' before 's'.
• Disguisedly: This spelling matches the correct formation of the adverb from "disguise". It follows the pattern D-I-S-G-U-I-S-E-D-L-Y.

Based on this analysis, the correctly spelt word is "Disguisedly".

Correctly Spelt Word Identification

The process involves recognizing the base word "disguise" and understanding how the adverb form "disguisedly" is constructed. Errors in spelling often occur with letter order or substituting incorrect vowels.

Comparing each option to the standard English spelling confirms that only one option is written correctly.

The correctly spelt word among the choices is Disguisedly.