noun Also in-be·tween·er.
a person or thing that is between two extremes, two contrasting conditions, etc.: yeses, noes, and in-betweens; a tournament for professional, amateur, and in-between.
a person who handles the intermediary steps, as in a manufacturing or sales process.
being between one thing, condition, etc., and another: a coat for in-between weather.
Origin of in-between
First recorded in 1805–15
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for in-betweenness
Historical Examples of in-betweenness
The rest is only in-betweenness—what Albert's uncle calls padding.Oswald Bastable and Others
intermediatehe's at the in-between stage, neither a child nor an adult
an intermediate person or thing
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012