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v.
judge or regard; look upon; judge; "I think he is very smart"; "I believe her to be very smart"; "I think that he is her boyfriend"; "The racist conceives such people to be inferior"
v.
be undecided about something; waver between conflicting positions or courses of action; "He oscillates between accepting the new position and retirement"
v.
use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments; "I've been thinking all day and getting nowhere"
v.
be confusing or perplexing to; cause to be unable to think clearly; "These questions confuse even the experts"; "This question completely threw me"; "This question befuddled even the teacher"