adjective /ˈdɛp.ɹɪ.keɪ.təd,ˈdɛp.ɹə.keɪ.təd/
a) Strongly disapproved of.
Just because an element or attribute is deprecated doesnt mean that it cant be used on a webpage.
b) Belittled; insulted
A deprecated element or attribute is one that has been outdated by newer constructs.
See Also: deprecation
Wikipedia foundation.