to try doing something and see if it works / to try something and see if it's suitable / to test; to get a test

for a test; for a tryout

(neologism) to cohabit (live together as if married)

trial; experiment

to challenge; to try; to put to the test

challenge

to test or try the strength (of)

test

(literally) fire tests gold, hardship tests strength / (figurative) only hardship can test your ability and endurance; to be better, you need to put yourself through hardship

(obsolete) to have; to possess