[VP; subj: abstr (usu. слова, мысль, образ etc)]
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⇒ having produced a strong impression on s.o., to be remembered by him for a very long time:
- X was etched in Y's memory;
- X remained (fresh) in Y's memory;
- X became unforgettable.
♦ "Он не мог не видеть, какое глубочайшее впечатление произвели на людей проникновенные, западающие в душу слова нашего любимого вождя" (Войнович 4). "He could not help but see what a profound impression the heartfelt, unforgettable words of our beloved leader made on these people" (4a).
Большой русско-английский фразеологический словарь. — М.: ACT-ПРЕСС КНИГА. С.И. Лубенская. 2004.