know–noth·ing 
/ˈnoʊˌnʌθɪŋ/ noun
plural know–noth·ings /ˈnoʊˌnʌθɪŋ/ noun [count] : a person who lacks intelligence or knowledge : a stupid or ignorant person
▪ He regards his political rivals as a bunch of know-nothings. — often used before another noun ▪ a bunch of know-nothing politicians
▪ He regards his political rivals as a bunch of know-nothings. — often used before another noun ▪ a bunch of know-nothing politicians
