'Arry
From UnknowableWiki
'Arry is a nickname used by Ron Weasley to refer to Harry Potter, when the boy is with his mouth full of food during the start-of-term feast of their fourth year at Hogwarts (GF12). The dwarf who delivers Ginny's Valentine to Harry also calls him that (CS13).
Fleur Delacour, due to her accent, calls Harry 'Arry as well (GF37, HBP5, DH5, DH25), as does Stan Shunpike (PA3). Ginny irritatedly accuses Harry of liking the way Fleur calls him "'Arry" after his feeble protest against Ginny's nickname for her, Phlegm (HBP5).
Mundungus also refers to Harry as 'Arry when they meet in Hogsmeade (HBP12); Scabior does the same when Snatchers capture the Trio (DH23).

