The Greek adjective anemeros (ἀνήμερος) means fierce, savage, or untamed — the opposite of hemeros (gentle, tame). It appears once in the New Testament (2 Timothy 3:3), in Paul's list of characteristics of people "in the last days" who have a form of godliness but deny its power.
Anemeros appears in one of Paul's most sobering vice lists, describing the spiritual condition of humanity apart from genuine transformation in Christ. The list in 2 Timothy 3:1–5 catalogs the moral decay of the last days: lovers of self, lovers of money, boastful, proud, abusive, disobedient, ungrateful, unholy, unloving, irreconcilable, slanderous — and fierce. This is not describing pagans outside the church but people with "a form of godliness" — religious externalism without real power. Anemeros — untamed, brutal ferocity — is a sign that the Spirit's fruit of gentleness is absent. The Spirit-filled life is marked by praotes (meekness/gentleness, Galatians 5:23); the flesh produces savagery.