IPA: /əˈkʌstəmd/
KK: /əˈkʌstəmd/
Being used to something because it has happened regularly or frequently in the past. It describes a state of being familiar with or comfortable in a certain situation or environment.
She is accustomed to waking up early for her morning jog.
Accustomed is formed from "ac-" (a variant of "ad-", meaning to) and "custom" (from Latin "consuetudo", meaning habit or usage) and the suffix "-ed" (indicating a state or condition). The word describes a state of being in a habitual condition or being used to something.
Think of being 'used to' something — 'ac-' means to, and 'custom' relates to habit. This helps you remember that 'accustomed' means being in a habitual state.