the word 'tanager' entered english in the early 17th century from modern latin, where it was used as a genus name 'tanagra'. this latin term was itself borrowed from portuguese 'tangará', which is believed to be of tupi (a brazilian indigenous language) origin. the word's journey reflects european naturalists' adoption of local names for new world fauna. its meaning has remained specific and stable, referring exclusively to the group of brightly colored songbirds native to the americas.

the word 'tanager' is a simplex loanword. it does not contain separable morphemes within modern english spelling.