The term 'unplentiful' is an adjective meaning SCARCE or not plentiful. It is often used to describe a situation where there is a lack of something, such as resources or supplies. This term can be used to describe a situation where there is a limited amount of something available, or where the amount of something is not enough to meet the needs of those who require it. The crossword solution for this term is 'SCARCE', which is another word for not plentiful or abundant.