summer and winter
run the gauntlet
trial period
test period
watchful waiting
probation
on trial
prove
tentative
testing
trial
all the while
pilot project
pilot program
testbedding
trial run
tried and true
undergo
hour of cause
put to the test
immunoassay
pilot
take time
overtest
sample
tribotest
test out
efficacy
sit
experiment
try out
testerically
clock-watching
trialling
o'er
clock-watch
try
laboratorily
trialable
over
self-test
cotest
season
put through its paces
try on for size
cotemporaneously
flirt
screen
test
screen out
proof
sieve
aftertest
experimentalist
sort
foretest
testingly
comparatism
in one's own time
experimentation
trained
give something a whirl
long-running
wind tunnel testing
long haul
long run
battle-tested
pretest
long-range
beans
long
time-use
inside
midperiod
see
milk the clock
testability
trier
experimentational
testedness
testiness
tasky
PAT testing
examine
testee
essay

English words for 'To spend extended periods of time with; to test.'

As you may have noticed, above you will find words for "To spend extended periods of time with; to test.". Hover the mouse over the word you'd like to know more about to view its definition. Click search related words by phrase or description. to find a better fitting word. Finally, thanks to ChatGPT, the overall results have been greatly improved.

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