Yes, "slipped" is a transitive verb when it is followed by a direct object. For example, "She slipped on the ice." In this sentence, "ice" is the direct object of the verb "slipped."
transitive
transitive
transitive
transitive transitive
transitive
Transitive
Transitive nouns don't exist. There are, however, transitive verbs. Transitive verbs must have a direct object. For example, "holds" is a transitive verb because it requires a direct object. "She holds" is not a complete thought, but "she holds flowers" is.
slipped /slipped I slip, I slipped, I have slipped
transitive
transitive
checkers is the direct object so play is transitive