Recrementitious means excessive or unnecessary accumulation of something. Some antonyms for this term could be deplete, decrease, reduce, or eradicate. These words suggest the opposite of recrementitious, implying a decrease in the amount rather than an increase. If something is recrementitious, it is unnecessary and excessive, but depleting or reducing something means that it is being done with a purpose, to make it less. Eradicating something means that it is being completely eliminated, indicating that it was unwanted or unnecessary. These antonyms signal a desire to decrease or remove something rather than collecting or retaining it.