"slowed" in the verb sense
1. decelerate, slow, slow down, slow up, retard
lose velocity move more slowly
"The car decelerated"
2. slow, slow down, slow up, slack, slacken
become slow or slower
3. slow, slow down, slow up
cause to proceed more slowly
"The illness slowed him down"
Source: WordNet® (An amazing lexical database of English)
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