This is the 178th most frequent Thai word.
สม
"สม" means "to befit," "suitable," or "to match."
In this sentence, 'สม' is part of the word 'สมบูรณ์' which means 'perfect' or 'complete'.
เขาเป็นนักกีฬาที่สมบูรณ์แบบในทุกด้าน
He is a perfect athlete in all aspects.
'สม' is used in 'สมควร', which can be translated to 'deserving' or 'appropriate'.
สมชายเป็นคนที่สมควรได้รับรางวัลนี้
Somchai is someone who deserves this award.
Here, 'สม' appears in 'สมดุล', meaning 'balance' or 'equilibrium', emphasizing equal weight between factors.