สิง • (sǐng) (abstract noun การสิง)
From Old Khmer syaṅa, syaṅ, siyaṅa, sīyaṅa, siṅya, siṅa, sīṅa (“to dwell; to reside; to be present; etc”). Compare Pre-Angkorian Old Khmer siṅ; Angkorian Old Khmer syaṅ; Modern Khmer សិង (sĕng).