"Helluv" is a slang term that originated in the United States. It is used to describe something that is exceptionally great or intense. Although "helluv" is a commonly used term, there are various alternatives that can be substituted in its place. Some synonyms include "awesome," "terrific," "fantastic," "amazing," and "incredible." Other equivalents include "unbelievable," "mind-blowing," "jaw-dropping", "phenomenal," and "outstanding." Each of these words can be used to replace "helluv" while maintaining the same degree of meaning. These terms can be used to describe positive experiences, products, or even people.