bold and boorish; rough and unrestrained
Describes a person or behavior that is uninhibited and forceful but also crude, lacking refinement. Often used in literary or critical descriptions of character.
People around him were bewildered by his bold and boorish behavior.
That warlord was rough and unrestrained, but he was admired by his subordinates.
豪放磊落 means 'broad-minded and magnanimous', focusing on openness and generosity, while 豪放粗野 adds a negative nuance of crudeness or boorishness.
粗野 simply means 'crude' or 'boorish', without the element of boldness or uninhibitedness that 豪放 carries.
Compound of 豪放 (bold, unrestrained) and 粗野 (crude, boorish). The exact historical derivation is uncertain, but the combination is straightforwardly descriptive.