The Greek adjective aperantos (from a- 'without' + perainō 'to bring to an end') means endless, boundless, or interminable. Its single New Testament use warns against 'endless genealogies' that distract from genuine faith.
1 Timothy 1:4 cautions against 'myths and endless (aperantos) genealogies' that 'promote controversies rather than advancing the work of God — which is by faith.' Paul diagnoses a specific pathology in religious communities: the temptation to generate infinite complexity and speculation where God calls for simple, trusting obedience. Aperantos controversies substitute intellectual games for loving service. The word is a caution about mistaking theological busyness for spiritual depth — and a call to return to the 'goal of this command, which is love' (1:5).