Use 'synthetically' to stress that something is made by human process, not found in nature. The fabric was synthetically designed to repel water.
Pro Tip 2/3
Not Biological
'Synthetically' implies absence of natural processes in production, like in lab-made food additives. Flavorings were added synthetically to enhance the taste.
Pro Tip 3/3
Tech-Related Context
Prefers contexts involving science or technology, where human-made methods are essential. The compound was synthetically altered to improve its strength.