high–strung 
/ˈhaɪˈstrʌŋ/ adjective
/ˈhaɪˈstrʌŋ/ adjective [more high–strung; most high–strung] chiefly US : very nervous or easily upset
▪ stories of high-strung performers who place unreasonable demands on the people who work with them ▪ Dogs of this breed are often high-strung. [=(chiefly Brit) highly strung]
▪ stories of high-strung performers who place unreasonable demands on the people who work with them ▪ Dogs of this breed are often high-strung. [=(chiefly Brit) highly strung]
