Demur about/against, bother, confrontation with, call into question, and confront are all synonyms for challenge. Ease and simplicity are these antonyms of challenge. And here are another 32 synonyms for challenge.
Challenge Synonyms
1. problem
- Bother
- Dare
- Difficult task
- Obstacle
- Problem
- Provocation
- Test
- Trial
- Trouble
- Summons
2. confrontation with
- Confrontation with
- Defiance
- Disagreement with
- Dispute with
- Opposition
- Questioning of
- Stand against
- Test of
- Ultimatum
3. dispute
- Call into question
- Confront
- Demur about/against
- Disagree with
- Dispute
- Dissent from
- Object to
- Protest against
- Question
- Take exception to
- Take issue with
- Be a dissenter from