Comparative evidence

kʷi̯eh₁

• Lat. quiētus -a, -um ‘that is in a state of repose’, ‘reposing in sleep’, ‘doing nothing’, ‘inactive’, ‘quiet’, ‘free from disturbance’, ‘calm’, ‘serene’, ‘tranquil’

• Lat. quiēscō -ere ‘repose in sleep’, ‘fall asleep’, ‘rest from toil’, ‘enjoy a respite’, ‘find rest’, ‘take no action’, ‘be quiet’, ‘be still’ (OLD: 1553)

References

OLD = Glare, P. G. W. 1968. Oxford Latin Dictionary. Oxford: Clarendon Press.