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(hyphenated is used before a noun) Exactly right; perfectly accurate. Mr. Lynch's analysis of the company is spot on, if you ask me. I suggest we follow whatever advice he offers. Yes, those directions you gave me were spot on, thank you! Mark does a spot-on impression of our teacher—you have to hear it!
spot oncompletely accurate or accurately. British informal
2007 Clarissa Dickson Wright Spilling the Beans She advised her solicitors to give the money to my mother for me, as she believed my father would fail to pass it on to me. She was spot on.