What literary device is it if a word begins with the sound the previous word ends in? such as 'doubt' and 'truth' in: Doubt truth to be a liar.
I think you are looking for consonance. It is the consonant version of assonance, and alliteration is a more specific type of consonance.
However, I do not think I would characterize the end of "doubt" as having the same sound as the beginning of "truth".
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It is not specific to the end of one word and the beginning of another, but could work. – katatahito Jun 21 '19 at 5:01
