The Greek aprosópolémptós is a compound adverb meaning 'without receiving/accepting the face' — that is, without partiality or favoritism. It combines a (negative), prosópon (face/person), and lambánó (to receive).
Aprosópolémptós appears once in the New Testament in 1 Peter 1:17, where Peter calls believers to conduct themselves in reverent fear during their sojourn, since they call on a Father who 'judges each person's work impartially.' God's impartiality is a foundational attribute — He does not favor the rich, the powerful, or the religiously prominent (Acts 10:34; Romans 2:11). This same impartiality is to characterize the community of faith, where 'there is neither Jew nor Greek, slave nor free, male nor female' (Galatians 3:28).