look back

shield worn across one's back / support, backing / supporter, backer; patron, benefactor, sponsor

walking backwards

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

back, behind, rear

hair on the back of one's head

mistake, disadvantage / loss, lose

royal family