vague /veɪɡ 
/ ▸ adjective of uncertain, indefinite, or unclear character or meaning: many patients suffer vague symptoms.
▪ thinking or communicating in an unfocused or imprecise way: he had been very vague about his activities.
– ORIGIN mid 16th century: from French, or from Latin vagus ‘wandering, uncertain’.
EnglishOxford Dictionary of English
