supersubtle
adjEtymology From super- + subtle.
1
Very tenuous or rarefied.
- She was introduced to Madame Grandoni, and tea was immediately served; Hyacinth being gratefully conscious the while of the supersubtle way in which Lady Aurora forebore to appear bewildered at meeting him in such society.1886, Henry James, The Princess Casamassima, London: Macmillan and Co.: