Dopey/ˈdəʊpi/ Definition 1 of 3Pro Tip 1/3Temporary State Used when someone's not thinking clearly, possibly due to sleepiness or distraction. After the long flight, he was dopey and kept forgetting things. Pro Tip 2/3Not Derogatory It's a gentle term and not meant to be very harsh or insulting. Oh, don't mind me, I'm just being a bit dopey this morning. Pro Tip 3/3Often Playful Can be used affectionately in casual conversation. You're acting dopey, but it's cute how you can't stop yawning.