The term 'not plentiful' can be described by the crossword solutions of 'SCANT, ' 'SCARCE, ' and 'SPARSE.' All three words refer to a lack of abundance or quantity, but each has its own subtle nuances. SCANT implies a small amount, while SCARCE suggests something is hard to find or obtain. SPARSE, on the other hand, implies a lack of density or spread out distribution. In summary, all three words indicate that something is not plentiful.