conspicuous by (someone's) absence

Translations
заметный из-за отсутствия (кого-то)
The CEO was conspicuous by his absence at the meeting.
Генеральный директор был заметен из-за своего отсутствия на встрече.
Definitions
A phrase used to indicate that someone is noticeably missing from a situation or event where their presence was expected or would have been significant.
Words
absence

noun
отсутствие
conspicuous

adjective
заметный