Probably from airo (through the idea of exciting emotion); to be agreeable (or by implication, to seek to be so) -- please.
see GREEK airo
a. to please: τίνι, Matthew 14:6; Mark 6:22; Romans 8:8; Romans 15:2; 1 Thessalonians 2:15; 1 Thessalonians 4:1; 1 Corinthians 7:32-34; Galatians 1:10; 2 Timothy 2:4; ἐνώπιον τίνος, after the Hebrew בְּעֵינֵי, Acts 6:5 (1 Kings 3:10; Genesis 34:18, etc.).
b. to strive to please; to accommodate oneself to the opinions, desires, interests of others: τίνι, 1 Corinthians 10:33 (πάντα πᾶσιν ἀρέσκω); 1 Thessalonians 2:4. ἀρέσκειν ἑαυτῷ, to please oneself and therefore to have an eye to one's own interests: Romans 15:1, 3.