IPA: /klænˈdɛstɪnəs/
KK: /klænˈdɛstɪnəs/
The condition of being secret or hidden, often because it involves something that is not allowed or is illegal.
The clandestineness of their meetings raised suspicions among the authorities.
Clandestineness → It is formed from "clandestinus" (from Latin, meaning secret or hidden) and the suffix "-ness" (meaning the state or quality of). The word "clandestineness" refers to the quality of being secret or hidden.
Think of 'clandestinus' meaning secret, and remember that 'clandestineness' describes the state of being secret.
No commonly confused words.