rearing

The noun has 2 meanings:

Meaning #1: the properties acquired as a consequence of the way you were treated as a child
  Synonyms: raising, nurture

Meaning #2: raising someone to be an accepted member of the community
  Synonyms: breeding, bringing up, fostering, fosterage, nurture, raising, upbringing

The adjective rearing has one meaning:

Meaning #1: (heraldry) rearing on left hind leg with forelegs elevated and head usually in profile
  Synonym: rampant