adj.(especially of promises or contracts) having been violated or disregarded

"broken (or unkept) promises"

同義詞：broken

Unkept
The 5-HT 1A Receptor: an unkept promise?
The economies of education: unkept promises?
Unkept Promises: Experiences of Immigrant Women with the Neo-Criminalization of Wife Abuse
XV International AIDS Conference: an unkept promise of access for all.
Protecting severely abused and neglected children. An unkept promise.
Building Blocks of Psychology: on Remaking the Unkept Promises of Early Schools
Reparable Harm: Fulfilling the Unkept Promise of Educational Opportunity for Long Term English Learners
Reparable Harm: Fulfilling the Unkept Promise of Educational Opportunity for California's Long Term English Learners
Mammalian target of rapamycin inhibitors in organ transplantation: an unkept promise.