1) Absorbed in thought 2) Be thought tipsy 3) Bewildered 4) Bewildered or confused 5) Caused bewilderment 6) Dazed and confused 7) Deep in thought 8) Deeply absorbed in thought 9) Engrossed in thought 10) Filled with bewilderment 11) Lost 12) Lost in thought 13) Perplexed 14) Preoccupied 15) Puzzled 1) At sea 2) Baffled 3) Bewildered 4) Confounded 5) Confused 6) Mazed 7) Perplexed 8) Preoccupied 9) Puzzled 
Bemused is slang for intoxicated, drunk.
[adj] - deeply absorbed in thought
bemuse, bemused, bemusing 1. To make utterly confused or muddled, as with intoxicating liquor.2. To put into a stupid stare, to stupefy.
deep in thought(p) adjective deeply absorbed in thought; `as distant and bemused as a professor listening to the prattling of his freshman class`; `lost in thought`; `a preoccupied frown`
bewildered or confused. · lost in thought; preoccupied.
[SAT terms] perplexed by many conflicting situations or statements