adjective
making great mental demands
Synonyms
Examples
- hard to comprehend or solve or believe
- a baffling problem
- I faced the knotty problem of what to have for breakfast
- a problematic situation at home
verb
be a mystery or bewildering to
Synonyms
Examples
- This beats me!
- Got me--I don't know the answer!
- a vexing problem
- This question really stuck me
verb
hinder or prevent (the efforts, plans, or desires) of
Synonyms
Examples
- What ultimately frustrated every challenger was Ruth's amazing September surge
- foil your opponent
verb
restrain the emission of (sound, fluid, etc.)
Synonyms