speculation

Context: Whether a fully comprehensive system of secondary education was ever likely to achieve its meritocratic and social goals will remain comprehensive. Source: Abercrombie, N. and A. Warde (2003) //Contemporary British Society,// Great Britain: T.J. International, Padstow, Cornwall

Defintion:n.[C,U] when you guess about the possible causes or effects of something without knowing all the facts, or the fuesses that you make: Eg: There is speculation that the president is ill. Source: Longman Dictionary Contemporary English (2005), Person Education Limited