Mountingly can be replaced by alternative words that carry a similar meaning. These might include words such as increasingly, progressively, and steadily. Other synonyms for mountingly might include the words growing, augmenting, and intensifying. Depending on the context in which mountingly is being used, there may be a diverse range of synonyms that could be appropriate. For instance, writing about an increasingly challenging situation could use words such as mounting, escalating or surging. Similarly, an article covering an intensifying conflict may use synonyms such as rising, burgeoning or multiplying to convey the increasing nature of the situation.