Gilpen

According to the Old English Dictionary:

gilpen

adj. Boastful :-- Ne mæg he geþyldgian ðæt he ðæt forhele ac wierþ ðonon gilpen he cannot bear to conceal it, but becomes boastful on account of it, Past. 33, 2; Swt. 216, 9: Cot. MS. Wát ic ðæt wǽron Caldéas gúðe ðæs gilpne I knew that the Chaldeans were so boastful in war; Salm. Kmbl. 413; Sal. 207. gilpen