Impression/ɪmˈpreʃn/ Definition 1 of 4Pro Tip 1/3Subtle Nuances Even a small gesture can give an impression, so observe details. Her quick glance gave the impression of disinterest. Pro Tip 2/3Unspoken Thoughts Impressions can be about something not explicitly stated but felt. He left the room, giving the impression he was upset. Pro Tip 3/3First Encounter First impressions are initial thoughts upon meeting someone or something. Her confident handshake gave a strong first impression.