C2 noun /ˌvælɪˌtjuːdɪˈnɛəriən/
valetudinarian
ипохондрик
Meaning
A person who is unduly anxious about their health or constantly concerned with minor ailments.
Example
He was regarded as a valetudinarian, always worrying about his health.
Его считали ипохондриком, всегда беспокоившимся о своем здоровье.