Back-formation is the process of forming a new word by / from:

inflectional suffix

derivational infix

bound base

inflectional suffix

derivational infix

bound base

joining two or more words together

joining two or more morphemes together

mixing two words into one

joining two or more words together

cutting off parts of two words

adding affixes to the stem

morpheme occurring in the middle of a word

morpheme added after a stem

bound base at the beginning of a word

derivational suffix

derivational infix

bound base

inflectional suffix

derivational infix

bound base

derivational suffix

derivational infix

bound base

derivational suffix

derivational infix

bound base

inflectional suffix

derivational infix

bound base

derivational suffix

derivational infix

bound base

inflectional suffix

derivational infix

bound base

inflectional suffix

derivational infix

bound base

inflectional suffix

derivational infix

bound base

compound words cannot be separated by any segment of language

each component of compound words cannot perform a separate grammatical function

a component of a compound word cannot participate in a grammatical structure