challenge

Entry Definition
(competition, race) s/he challenges h/
(competition, race) s/he challenges h/
s/he challenges h/ without result (see examples)
s/he tries h/, tries h/ out (e.g., bicycle); s/he tries to help h/, tries to rescue h/; s/he challenges h/, tests h/ (strength, ability, etc.)
s/he attempts it, tries it out; s/he challenges it, tests self against it
s/he tries to get h/ to do it; s/he challenges, tests, or tries out something belonging to h/
s/he challenges h/, tries h/ out, tests h/
s/he challenges it
trying, attempting; testing, challenging