In Greek mythology, Anticlus (Ancient Greek Ἄντικλος), son of Ortyx, is one of the Achaean warriors hidden in the Wooden Horse. When Helen circles the horse imitating the voices of the heroes' wives, he alone nearly answers until Odysseus clamps his mouth — in some versions so tightly that Anticlus is strangled.
Adapted from Wikipedia, "Anticlus" · CC BY-SA 4.0
I.Helen at the Horse
In Odyssey 4 Menelaus tells Telemachus how Helen walked three times round the hollow horse, calling the hidden chieftains by name in the voices of their wives. The Achaeans nearly cry out; Odysseus holds them back. Anticlus alone is ready to answer (Tryphiodorus names his wife Laodamia); Odysseus shuts his mouth with his hands and saves the stratagem.
Apollodorus' Epitome repeats the test on the night of the sack. Tryphiodorus and later notices add that Odysseus held him so hard he choked him — a grim variant of the silencing.
II.Homonym note
Anticlus is this Horse warrior alone; he is not Anticleia (Odysseus' mother) nor other similarly named figures.