Careless or lawless in style. Now rare.

Disregarding commonly accepted rules, deviating freely from correctness, esp. in matters of grammar or literary style; overstepping customary limits.

Impaired or spoiled by some fault, flaw, blemish, or defect; faulty, defective, imperfect, bad… Of language, style, spelling, etc. Also transferred…

Of style, action, etc.: Not in conformity with a recognized standard; improper, faulty.

Of literary composition or translation: extremely free; loose.