Crossword Heaven

Answer: THINK

THINK is a crossword puzzle answer that we have spotted 35 times.

• Use your brain
• Reflect
• Use one's bean
• "Concentrate!"
• Get lost in a brown study
• End of the observation
• Something to do twice?
• "Use your head!"
• 47 Down motto
• Reason
• Deliberate
• Use one's head
• Cogitate
• Use your head
• Cerebrate
• Opine
• Get ideas
• 1968 hit for 42-Across
• Use one's gray cells
• Ideate
• Ponder
• Engage in cerebration
• With 61-Across, carefully consider ... or a clue to this puzzle's theme
• Aptly named Final Jeopardy! theme song
• Tank type
• Have in mind
• Use one's noodle
• "If I Only Had a Brain" verb
• "Just ___!"
• Assume
• See 1-Across
• IBM's ___ exhibit
• With 19-Across, reconsider ... or a hint to the starts of the five starred clues
• Use your noodle
• Believe