Actor who played the venal Maryland state governor Clay Davis in the US crime drama The Wire

Many fictional characters are known by their catchphrases. Few are identifiable by a single exclamation alone. Among the exceptions are Lady Bracknell in The Importance of Being Earnest (“A handbag?”) and the venal Maryland state senator Clay Davis, who appeared in all five series of the acclaimed US crime drama The Wire between 2002 and 2008.

Senator Davis, played by Isiah Whitlock Jr, who has died aged 71, was notable for his unique pronunciation of a monosyllabic expletive. On his lips, its central vowel was bent out of shape and stretched as thin as pizza dough: “Sheee-it”.