your/the last/final word

the final word

1. The final point in an argument or discussion, especially that which decisively or conclusively ends it. The whole meeting just descended into chaos as everyone tried to have the final word. David is so smug and always has to have the final word in every debate.
2. The authority to decide how something ultimately happens or is done. As the editor-in-chief, I have the final word on the layout design for every issue.
See also: final, word

the last word

1. The final words in an argument or discussion, especially one that decisively or conclusively ends it. Everyone started shouting, trying to get in the last word, and the whole meeting just descended into chaos.
2. The most recent, modern, or advanced version of something. Typically followed by "in (something)." It may not look like much, but I can assure you that this machine is the last word in neural imaging.
See also: last, word
Farlex Dictionary of Idioms.

*last word

 and *final word; *final say
Fig. the final point (in an argument); the final decision (in some matter). (*Typically: get ~; have ~; give some one ~.) The boss gets the last word in hiring. Why do you always have to have the final word in an argument?
See also: last, word
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

the last word

or

the final word

COMMON If someone has the last word or the final word in a discussion or argument, they are the one who wins it or who makes the final decision. She does like to have the last word in any discussion. The final word will come from the Secretary of State.
See also: last, word
Collins COBUILD Idioms Dictionary, 3rd ed.

the ˌlast ˈword (in something)

the most recent, most fashionable, etc. of its type: They say that this new car is the last word in luxury. This is the last word in computer technology.
See also: last, word

your/the last/final ˈword (on/about something)

your, etc. final decision or statement about something: ‘Will you take £900?’ ‘No, £1 000 and that’s my last word.’ Is that your final word on the matter?
See also: final, last, word
Farlex Partner Idioms Dictionary
See also:
  • the final say
  • the final word
  • have the final say
  • have the final word
  • have the last say
  • the last word
  • last word
  • last word, the
  • have the last word
  • get in the last word