Effluous is an uncommon word which means to overflow or pour out in a continuous stream. There are various other words which can be used instead of effluous, depending on the context and the tone of the sentence. Some synonyms for effluous include gushing, pouring, cascading, flowing, streaming and spouting. These words are generally used to describe the movement of fluids, such as water, blood, lava or tears. They can also be applied in a metaphorical sense, for instance to describe a person's emotions or ideas being expressed in an unrestrained or lavish manner. Overall, effluous may not be a commonly used word, but there are plenty of synonyms to convey its meaning.