The word "mechanicalness" implies a certain level of rigidity and automation, suggesting that something is repetitive or lacking in creativity. As such, alternatives might include words like "robotic," "systematic," or "routine." Similarly, words like "predictable," "monotonous," and "unvaried" might also be used to describe something that lacks spontaneity or vibrancy. Other potential synonyms could include words like "unimaginative," "uninspired," or "lifeless," as these terms carry connotations similar to those associated with mechanicalness. Overall, the use of these synonyms can help to convey the ideas of sameness and predictability, as well as the lack of creativity or variation.