Etymology
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truculent (adj.)

1530s, from Latin truculentus "fierce, savage, stern, harsh, cruel," from trux (genitive trucis) "fierce, rough, savage, wild," perhaps from a suffixed form of PIE root *tere- (2) "cross over, pass through, overcome." Related: Truculently.

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truculence (n.)

1727, from Latin truculentia "savageness, cruelty," from truculentus (see truculent). Related: Truculency (1560s).

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