Simple past tense and past participle of test.(verb)
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Use "tested" in a sentence
"The reason we haven't had him tested is because our school district will just put him in Special education, which is basically where they put the slow kids or the violent kids, and forget about them."
"Clay tested is the equivalent as UL (Underwriters Laboratory) tested!"
"A year later, Khrushchev again tested the inexperienced President Kennedy by placing deadly nuclear missiles 90 miles from our shores in Communist Cuba."