You know what it looks like… but what is it called?
TAKE THE QUIZ“word is”
The following 3 entries include the term word is.
my word is my bond
idiom—used to indicate that one will always do what one has promised to do
someone's word is his/her bond
idiom—used to say that someone always keeps his/her promises
someone's word is law
idiom—used to say that other people must do what someone says
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Merriam-Webster unabridged