Adjective
Not leavened; containing no leaven; as, unleavened bread.
Source: Webster's dictionaryEvery dimwit editor who sees himself as the source of all dreary blanc-mange plain porridge unleavened literature, licks his guillotine and eyes the neck of any author who dares to speak above a whisper or write above a nursery rhyme. Ray Bradbury
Newt Gingrich has a restless and outsized intelligence that is tragically unleavened by any kind of critical sensibility. John Podhoretz
unleavened bread is often simply flour mixed with water Source: Internet
Additionally, there is a tradition of not eating matzoh (flat unleavened bread) in the 30 days before Passover begins so that there will be an increased appetite for it during Passover itself. Source: Internet
And on the fifteenth day of the same month is the feast of unleavened bread unto the LORD; seven days ye shall eat unleavened bread. Source: Internet
In commemoration, for the duration of Passover no leavened bread is eaten, for which reason Passover was called the feast of unleavened bread in the Torah or Old Testament. Source: Internet