IPA: /ˈædɪtəm/
KK: /ˈædɪtəm/
A special room or area in an ancient temple that is considered very holy and is usually only accessible to priests.
The priests entered the adytum to perform their sacred rituals.
Adytum comes from the Greek 'adytos' (meaning inaccessible or unapproachable), which is derived from 'a-' (meaning not) and 'dyein' (meaning to enter). The term originally referred to the innermost sanctuary of a temple, a place that was not accessible to everyone.
Imagine a sacred place that is 'inaccessible' ('adytos') to most people, which helps you remember that 'adytum' refers to a holy or restricted area.
No commonly confused words.