In ‧ ter ‧ net ‧ ese /ˌɪntənetˈiːz $ -tər-/ BrE AmE noun [uncountable]
a very informal style of written language, used in emails or ↑ chat room messages etc, that does not follow the normal rules of grammar and does not, for example, use capital letters, ↑ punctuation etc – used to show disapproval