GRE gutless Definition Cowardly; lacking courage or determination. Example "It was gutless of him to sneak out without saying goodbye." Sign in to save GRE PDF — $25 ← gusto gutter → Related words GRE awe GRE smithereens GRE abacus SAT abase GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate SAT abdomen GRE abduct GRE aberrant