Characterized by a lack of desirable qualities; not good; of poor quality or condition; causing unpleasantness or harm; morally wrong or wicked.
It can describe a wide range of negative attributes, from physical imperfections and failures to moral failings and adverse effects.
Its meaning is highly contextual, influenced by the subject, the situation, and the speaker's intention.
It also represents a measure of performance, quality, or outcome that falls below an acceptable standard.
EMS REP BIG ILL
EVIL JUJU GRIM POOR
LOUSY AWFUL BADLY SORRY RISKY UNFIT TOUGH
SEVERE ROTTEN SLUTTY WICKED SINFUL FORGED SPOILT
IMMORAL SPOILED ABYSMAL CORRUPT NAUGHTY HARMFUL BADNESS UNSOUND
DREADFUL SINISTER TERRIBLE HORRIBLE INEDIBLE CRIMINAL
ATROCIOUS DEFECTIVE REGRETFUL
MALEFICENT MALEVOLENT VILLAINOUS
DISOBEDIENT MISCHIEVOUS UNFAVORABLE COUNTERFEIT SPECULATIVE SUBSTANDARD
INAUSPICIOUS
UNCOLLECTIBLE
UNSATISFACTORY