hy ‧ per ‧ sen ‧ si ‧ tive /ˌhaɪpəˈsensətɪv◂, ˌhaɪpəˈsensɪtɪv◂ $ -pər-/ BrE AmE adjective
1 . if someone is hypersensitive to a drug, substance etc, their body reacts very badly to it SYN allergic
hypersensitive to
I discovered I was hypersensitive to caffeine.
2 . very easily offended or upset
hypersensitive to
She’s hypersensitive to any form of criticism.
—hypersensitivity /ˌhaɪpəsensəˈtɪvəti, ˌhaɪpəsensɪˈtɪvəti $ -pər-/ noun [uncountable]