criminal record, previous conviction / (figuratively) past misdeed

to hide, to conceal

that which is hidden / that which is protected from outside / (clothing) pocket

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

one shouldn't bury one's head in the sand while leaving one's bottom exposed

conceal, cover up

(weaponry) hidden/concealed weapons

secret camera; hidden camera