Grossest

adjective

1. (of behaviour considered to be wrong) Highly or conspicuously offensive.

   "a gross mistake;  gross injustice;  gross negligence; a gross insult"

2. (of an amount) Excluding any deductions; including all associated amounts.

   "gross domestic product; gross income; gross weight"

3. Seen without a microscope (usually for a tissue or an organ); at a large scale; not detailed.

   "gross anatomy"

4. Causing disgust.

   "I threw up all over the bed. It was totally gross."

5. Lacking refinement in behaviour or manner; offending a standard of morality.