parenting (n.) Look up parenting at Dictionary.com
1959, verbal noun from parent (v.). An earlier term was parentcraft (1930); also see parentage.
parent (v.) Look up parent at Dictionary.com
1660s, from parent (n.). Related: Parented; parenting.
rejection (n.) Look up rejection at Dictionary.com
1550s, from French réjection (16c.) or directly from Latin reiectionem (nominative reiectio) "act of throwing back," noun of action from past participle stem of reicere (see reject). In 19c., it also could mean "excrement." Medical transplant sense is from 1954. In the psychological sense, relating to parenting, from 1931.