Shut out, omit, exclude.
try, try out, taste
Bore.
Lady Gaga can answer this for me. Believable, credible, creditable, likely, plausible, presumptive, probable.
An antonym for 'help' is hinder.
Destroy
GRE Antonyms Questions Preparation
Analogy and Antonym Questions on the GRE
How to Use Word Interface in Word 07- Part 1
How to get text columns in Microsoft Word