"Damer" means to make something dull or lifeless. There are numerous synonyms or similar expressions to use instead of "damer." For example, "bore," "lull," "numb," "stupefy," "put to sleep," "deadened," "stunned," "stagnate," etc. can be used instead. Each of these words implies a similar idea of lack of life or excitement. All these alternatives can certainly add variety to your writing, making it much more expressive and diverse. When using synonyms for "damer," it's essential to choose the right word that expresses the intended meaning and flows well with the overall tone of the text.