|Half empty, half full, or whatever.|
It's not enough to answer you are an optimist on a Briggs Meyer survey, or incorporate elements of hopeful speculation on random schoolwork. The true test is if you can be cheerful in the morning.
My kids are not cheerful in the morning.
These words might find expression when I call the nippers down to breakfast: cross, fussy, grouchy, grumpy, bad-tempered, ill-tempered, grumpadelic, grumpzilla.
Let me know of other good ones to add to the list.