affix
1. [ verb ] attach to
Synonyms: stick_on
Examples:

"affix the seal here"

Related terms: attach post stamp seal plaster adhere
2. [ verb ] add to the very end
Synonyms: append supplement add_on
Examples:

"He appended a glossary to his novel where he used an invented language"

Related terms: attach annex accessory attachment appendage
3. [ verb ] (grammar) attach or become attached to a stem word
Examples:

"grammatical morphemes affix to the stem"

Related terms: attach prefix suffix infix affixation
4. [ noun ] (linguistics) a linguistic element added to a word to produce an inflected or derived form
Related terms: bound_morpheme ending prefix infix word