Com·plain v. i. [imp. & p. p. Complained p. pr. & vb. n. Complaining.]
1. To give utterance to expression of grief, pain, censure, regret. etc.; to lament; to murmur; to find fault; -- commonly used with of. Also, to creak or squeak, as a timber or wheel.
O loss of sight, of thee I most complain! --Milton.
2. To make a formal accusation; to make a charge.
Now, Master Shallow, you'll complain of me to the king? --Shak.
Syn: -- To repine; grumble; deplore; bewail; grieve; mourn; regret; murmur.