IPA: /ˈsuːpərθɪn/
KK: /ˈsuːpərθɪn/
Extremely thin or slender, often to the point of being fragile or delicate.
The superthin laptop is lightweight and easy to carry.
Superthin → It is formed from "super-" (meaning above or beyond) and "thin" (from Old English "þynne", meaning having little thickness). The word "superthin" describes something that is extremely thin or thinner than usual.
Think of something that is 'beyond' ('super-') being 'thin' — that's why superthin means extremely thin.
No commonly confused words.