Antonyms for the word "let-ups" include intensification, acceleration, aggravation, increment, and continuation. These terms indicate a progression or increase, rather than a decrease or easing off. If a person is experiencing let-ups in their workload or stress level, they might benefit from seeking ways to intensify or accelerate their efforts to achieve their goals, rather than taking a passive approach. It is important to note that these antonyms do not necessarily connote negative outcomes or experiences, but rather describe a different type of momentum or energy. By understanding these opposing forces, individuals can make informed decisions about how to approach challenges and opportunities in their lives.