Affix

An affix is a piece added to a word, or root,^[1] which signals or changes its role in a sentence. It is part of grammar.^[2]^p18 Affixes may occur in various positions in a word:

Prefix: before the word/root, for instance: anti-climax; re-write.
Suffix: after the word/root, for instance: climactic; walked. Most plurals.
Infix: Inside the word/root. Rare in English, example: the m in recumbent.
Interfix: between words, to connect them: the reduced and in sun 'n sand; editor-in-chief.

References

↑ Root = the part of a word which does not change.
↑ McArthur, Tom (ed) 1992. The Oxford companion to the English language. Oxford University Press.

[1] Root = the part of a word which does not change.

[2] McArthur, Tom (ed) 1992. The Oxford companion to the English language. Oxford University Press.

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