hypocorism

/haɪˈpɑkərɪzəm/
noun
  1. A nickname or pet name that shows affection, often a shortened or altered form of a name.
    • The teacher explained that 'Mike' is a hypocorism for 'Michael'.
    • In many families, hypocorisms like 'Sweetie' or 'Buddy' are used every day.
    • Calling someone 'Lizzy' instead of Elizabeth is a common hypocorism.
What does "hypocorism" mean? | whatsthatwordmean | whatsthatwordmean