Synonyms:
- adverse,
- antagonistic,
- bad,
- baleful,
- baneful,
- conflicting,
- contrary,
- corroding,
- corrosive,
- corrupting,
- corruptive,
- counter,
- counteractive,
- counterproductive,
- damaging,
- deadly,
- deleterious,
- destructive,
- difficult,
- disadvantageous,
- disserviceable,
- distressing,
- evil,
- hard,
- harmful,
- hostile,
- hurtful,
- ill,
- in opposition,
- inimical,
- injurious,
- lethal,
- malefic,
- malevolent,
- malign,
- malignant,
- mischievous,
- miserable,
- negative,
- noisome,
- not easy,
- noxious,
- ominous,
- opposed,
- opposing,
- opposite,
- pernicious,
- poisonous,
- prejudicial,
- rigorous,
- scatheful,
- sinister,
- stressful,
- toxic,
- troublesome,
- troublous,
- trying,
- unadvantageous,
- unfavorable,
- unprofitable,
- unrewarding,
- untoward,
- useless,
- venenate,
- veneniferous,
- venenous,
- venomous,
- vicious,
- virulent,
- worthless,
- wretched