The term 'Lack of Oomph' can be described by two crossword solutions: ANEMIA (6 letters) and MALAISE (7 letters). ANEMIA is a condition in which the body does not have enough healthy red blood cells, resulting in fatigue and lack of energy. MALAISE is a feeling of general discomfort, uneasiness, or depression that can be caused by a variety of physical or psychological factors. Both of these conditions can lead to a lack of oomph, or a lack of energy and enthusiasm.