Simple past tense and past participle of lop.(verb)
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Use "lopped" in a sentence
"Luckily, the system fell apart when the head of this confederacy of dunces was lopped from the shoulders."
"The son having sent his father a messenger to know how he might bring the Gabii under a close subjection, the king, mistrusting the messenger, made him no answer, and only took him into his privy garden, and in his presence with his sword lopped off the heads of the tall poppies that were there."
"With a solid strike his sword lopped off one of the screeling's arms."