The word "over-abundantly" means excessively or extremely plentiful. Some synonyms for this term include excessively, profusely, excessively, massively, overwhelmingly, overgenerously, lavishly, and abundant. Other synonyms for the term include bountifully, copiously, extravagantly, phenomenally, prolifically, and superabundantly. These words imply an abundance that is almost too much or more than what is necessary. They also suggest that the excess can be overwhelming or even wasteful. Therefore, it is important to use these words carefully to ensure that the intended meaning of the sentence is being conveyed accurately.