Synonyms for under pin
verb reinforceAntonyms for under pin
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the
Philip Lief Group.
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the
Philip Lief Group.
Word Origin & History
1520s (figurative); 1530s (literal), from under + pin (v.). Related: Underpinned; underpinning.