Definition of acerb in US English:

acerb

adjective

US
literary
  • another term for acerbic
    • ‘It has the subtle acerb taste with violets and wood berries perfumes.’
    • ‘Above all, Delambre spices his presentation with acerb and delightful comments…’

Origin

Early 17th century: from Latin acerbus ‘sour-tasting’.

Pronunciation

acerb

/əˈsərb/