intr.v. com·plained, com·plain·ing, com·plains
1. To express feelings of pain, dissatisfaction, or resentment.
2. To make a formal accusation or bring a formal charge; file a complaint.
[Middle English compleinen, from Old French complaindre, complaign-, from Vulgar Latin *complangere : Latin com-, intensive pref.; see COM- + Latin plangere, to lament; see plāk-2 in the Appendix of Indo-European roots.]
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