Correct spelling, explanation: supplement can be either a noun or a verb. The word originates from Latin supplēmentum which means that by which anything is made full and appeared in the English language around the XIV century. Based on the original Latin spelling the word supplement should be written with double consonant p and the suffix -ement. Therefore, a shortened version supliment is not correct and does not have any meaning.

Definition of successful:
noun, something that completes a thing; a part added to a book, newspaper, or a document with additional information; geometry: a pair of arcs whose sum is 180°
verb, to complete, to add, to supply sth
During the wintertime, we all should take vitamin supplements to make up for vitamin D deficiency.
Diane sold homemade cookies and pastries to supplement her income.

Incorrect spelling, explanation: supliment is the incorrect version of the word supplement. As the right form comes from a Latin word supplēmentum, that came to the English language around the XIV century, the good spelling should not consist of letter i. Letter p should be doubled and combined with the suffix -ement. The word supplement should consist of three syllables: sup-ple-ment.

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling