___
___ 最 [most]
is in  ___
is in  ___
On-reading: サイ as in 最高 saikō ___
SAI most | extreme 
sai = "superlative degree" prefix  
最大[の] saidai[no] the maximum [of]  
最高[の] saikō[no] the best [of]  
最良[の] sairyō[no] the best [of] | excellent