pe·cu·liar 
/pɪˈkju:ljɚ/ adjective
/pɪˈkju:ljɚ/ adjective [more peculiar; most peculiar] 1 : not usual or normal : strange
▪ It seems peculiar that he would leave town and not tell anybody. ▪ The dog's peculiar behavior worried them. ▪ She got a peculiar feeling when the phone rang. ▪ She had a peculiar expression on her face. 2 not used before a noun, Brit, informal : not well : somewhat ill
▪ He's feeling peculiar.
▪ It seems peculiar that he would leave town and not tell anybody. ▪ The dog's peculiar behavior worried them. ▪ She got a peculiar feeling when the phone rang. ▪ She had a peculiar expression on her face.
▪ He's feeling peculiar.
peculiar to
: of, relating to, or found in (only one person, thing, or place)
▪ a custom peculiar to America [=a custom that is found only in America]
▪ a custom peculiar to America [=a custom that is found only in America]
— pe·cu·liar·ly adverb
▪ The movie has a peculiarly [=distinctively, uniquely, particularly] American quality. ▪ He's been behaving peculiarly. [=(more commonly) strangely, oddly]
▪ The movie has a peculiarly [=distinctively, uniquely, particularly] American quality. ▪ He's been behaving peculiarly. [=(more commonly) strangely, oddly]
