[ an-tee-vaks, an-tahy- ]
/ ˌæn tiˈvæks, ˌæn taɪ- /
adjective Informal: Disparaging.
of, relating to, or noting people, especially parents of young children, who distrust or are against vaccination: the antivax movement.
Origin of antivax
1990–95; anti- + vax (shortening and alteration of vaccination)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019