Synonyms of affix in English:

affix


See US English definition of affix

See UK English definition of affix

See Spanish definition of poner

verb

1‘he affixed a stamp to the envelope’

SYNONYMS
attach, stick, fasten, bind, fix, post, secure, join, connect, couple
clip, tack, pin
glue, paste, gum, tape
Trademark Sellotape
ANTONYMS

detach, remove

2‘affix your signature to the document’

SYNONYMS
append, add, add on, attach