Incorrect spelling, explanation: sucessful is the wrong spelling of the word successful. The adjective comes from a noun success combined with the suffix -ful and in the word-formation process, we cannot omit any letters from the original core, where the c is doubled. The only version that is correct is successful.

Correct spelling, explanation: spelling successful is the right form of the adjective created by adding the suffix -ful to the noun success. Word successful was first recorded in the XVI century. Adding the suffix -ful to the noun success gives a meaning of achievement. While creating the word we should not lose any letters from the original core to avoid spelling mistakes.

Definition of successful:
adjective, having achieved success, obtain wealth or favorable outcome
The attack was very successful and hackers have obtained many valuable data.
She was equally successful in her personal and professional life.

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling