The term "high hands" can refer to someone who is dominant or in control. Synonyms for this phrase include "in command," "in charge," and "authoritative." Other terms that convey a similar meaning include "top dog," "chief," and "leader." "Dominant" and "domineering" are additional adjectives to describe someone who exerts power or control. Colloquial expressions like "the boss" and "head honcho" can also be used. Overall, these synonyms indicate that someone has a position of authority or is highly influential in a specific situation.