nearest and dearest UK /ˈnɪəɹɪst(ə)n ˈdɪəɹɪst/US /ˈnɪɹɪst(ə)n ˈdɪɹɪst/adjective 1noun 1forms 1 adjective1 •Closest, most intimate. noun[plural only]1 •One's closest and most intimate family members, friends, etc.[W]hile all mourned and honoured the dead, thou hast lived to merit our hate and execration—lived to unite thyself with the vile tyrant who murdered thy nearest and dearest— […] — 1819 formsform only