pet name 
noun
A name that is used instead of someone’s usual first name to express fondness or familiarity.And ‘Pinky’ is a name (more of a pet name, really) that both men and women choose or are given....
- ‘Hey there, Munchausen,’ he said quietly, calling her by an old pet name.
- Johnny calls Francie ‘prima donna’ as a little pet name.
Synonyms
affectionate name, term of endearment, endearment, nickname, diminutive
rare hypocorism, hypocoristic
- physiology
- physiomedical
- physiomedicalism
- physiomedicalist
- physionotrace
- physionotype
- physiopathic
- physiopathologic
- physiopathological
- physiopathologist
- physiopathology
- physiophilosophy
- physiophonetic
- physiophonetics
- physioplastic
- physiopsychic
- physiopsychological
- physiopsychology
- physiotherapeutic
- physiotherapist
- physiotherapy
- physiotypy
- physique
- physiqued
- physis