The opposite for ordinary would be extra ordinary and opposite of dull could be bright
dull, boring, ordinary, plain tiresome, tedious, boring, dull, mind-numbing.
Different, or a change. extraordinary. special, unique
cliche,, ordinary,, average,, boring,, dull,, its really not that hard.
dull
A dull story
Dull, unimaginative.
Dull or quiet
dull, inconspicuous, drab,
Anger, dull or upset.
Dull, boring.
Comatose, sluggish, dull
Flat, dull, insignificant .