subtle

1 ENTRIES FOUND:
subtle /ˈsʌtl̟/ adjective
subtler; subtlest
subtle
/ˈsʌtl̟/
adjective
subtler; subtlest
Britannica Dictionary definition of SUBTLE
[or more subtle; most subtle]
1 
: hard to notice or see : not obvious
2 
: clever and indirect : not showing your real purpose
3 
: having or showing skill at recognizing and understanding things that are not obvious : perceptive

— subtly

/ˈsʌtl̟i/ adverb