perceive

[1]	see , make out , discern , catch sight of , glimpse , spot , espy , apprehend , take in , notice , note , discover , descry , observe , mark , remark , identify , distinguish , detect
[2]	appreciate , grasp , feel , sense , apprehend , understand , gather , comprehend , deduce , infer , figure out , ascertain , determine , conclude , decipher , (Colloq) dig , catch on
[3]	perceive of , regard , view , look on , consider , contemplate , judge , deem , believe , think