Another apparently emotive word is μαίνεσθαι. μαίνεται "He's crazy", Μαίνῃ "You're crazy" and μαίνεσθε "You're crazy" are all used disparagingly.
John 10:20 wrote:Ἔλεγον δὲ πολλοὶ ἐξ αὐτῶν, Δαιμόνιον ἔχει καὶ μαίνεται· τί αὐτοῦ ἀκούετε;
They used as an emotive way to stop others taking him seriously.
Acts 12:15 wrote:Οἱ δὲ πρὸς αὐτὴν εἶπον, Μαίνῃ. Ἡ δὲ διϊσχυρίζετο οὕτως ἔχειν. Οἱ δὲ ἔλεγον, Ὁ ἄγγελος αὐτοῦ ἐστιν.
She understood that Μαίνῃ meant they would not take her seriously.
Acts 26:24-25 wrote:Μαίνῃ, Παῦλε· τὰ πολλά σε γράμματα εἰς μανίαν περιτρέπει. Ὁ δέ, Οὐ μαίνομαι, φησίν, κράτιστε Φῆστε, ἀλλὰ ἀληθείας καὶ σωφροσύνης ῥήματα ἀποφθέγγομαι.
Paul insists that what he is saying is ἀληθῆ and σώφρονα.