Idioms and Phrases with sweet nothings
Endearments, often whispered, between lovers. For example, They sat in a corner all evening, whispering sweet nothings. [c. 1900] Also see sweet talk.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.