think big

think big (third-person singular simple present thinks big, present participle thinking big, simple past and past participle thought big)

1. (informal) To be ambitious.

• play it safe

• “think big” in the Cambridge English Dictionary, Cambridge: Cambridge University Press.
• “think big”, in Collins English Dictionary.
• “think big”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.
• “think big” in Longman Dictionary of Contemporary English, Longman.