Vague feeling is an emotion that is difficult to describe and often hard to pinpoint. It is a feeling of uncertainty or unease that can be difficult to express. VIBE, a four letter word, is a term used to describe the atmosphere or feeling of a place or situation. NOTION, a six letter word, is an idea or concept that is often based on incomplete information. SENSE, a five letter word, is a feeling or perception that is often based on instinct or intuition. All three words can be used to describe a vague feeling.