Select the INCORRECTLY spelt word.

The incorrectly spelled word is Rebelleous. The correct spelling is Rebellious. It means "defiant or resisting authority".

The other words are spelled correctly.

Here is a breakdown of the spelling of each word:

• Tedious is spelled correctly. It means "slow and long, especially causing tiredness or boredom".
• Advantageous is spelled correctly. It means "offering or providing an advantage".
• Victorious is spelled correctly. It means "having won a victory".