dērĕlictĭo, ōnis, f. [derelinquo],
an abandoning; trop., a disregarding, neglecting : communis utilitatis, Cic. Off. 3, 6, 30.
dērelictiō ōnis, f derelinquo, an abandoning, disregard, neglect : communis utilitatis. ...
An Elementary Latin Dictionary