What is the ancient Greek word for smile?

There isn't one single perfect ancient Greek word for "smile" that covers all nuances of the modern English word. The best translation depends on the context. However, some possibilities include:

* γελῶ (gelō): This verb means "to laugh," but it can also encompass a smile, particularly a light or joyful one. It's probably the closest single word.

* μείδιασμα (meidiasma): This noun refers to a "smile," often a gentle or sweet one.

Other words might be used depending on the type of smile, for instance, a smirk might require a different word altogether. The best choice would depend on the specific literary context.