Does the language have such a term?

Thai2English dictionary entry for well-rounded is ได้สมดุล

It's also in this Dictionary entry for well-rounded.

well-rounded

• [ADJ] ซึ่งมีความสามารถหลายด้าน; ซึ่งมีความสามารถหลายอย่าง,
  (NECTEC Lexitron 2 EN-TH)
  
• (เวลเรา'ดิด) adj. มีรสนิยมหลายด้าน,มีความสามารถหลายอย่าง,เจริญเติบโตอย่างดี,ได้สมดุล ###S. well planned,shapely
  (Hope Studio)
  

as mentioned above

มีความสามารถหลายอย่าง

Mii Khwaam Samart laai yaang (Possess the ability to do many things) is probably the best way to describe it.

Often times, even even university educated Thai's can be confused when you use a shortened word ได้สมดุล (ได้ has สมดุล "balance/equilibrium")

You're better off using a few more words to logically explain what you are trying to define ...

as mentioned above

มีความสามารถหลายอย่าง

Mii Khwaam Samart laai yaang (Possess the ability to do many things) is probably the best way to describe it.

Often times, even even university educated Thai's can be confused when you use a shortened word ได้สมดุล (ได้ has สมดุล "balance/equilibrium")

You're better off using a few more words to logically explain what you are trying to define ...

Yeah, I noticed that many Thai definitions of English words are what seem to be mini multi-word definitions.

Yeah, I noticed that many Thai definitions of English words are what seem to be mini multi-word definitions.

"Thai definitions" should read "Thai translations".

I was given this from a thai friend : เก่งรอบด้าน

What do you guys think?