Be, seem, etc. herself Definition 1 of 3Pro Tip 1/3Emotional Context Used when someone's behavior changes due to feelings or health. After the argument, she doesn't seem herself. Pro Tip 2/3Observation Cue Often a statement made by someone who knows the person well. You're quiet today, not quite yourself. Pro Tip 3/3Temporary Change Suggests a short-term change, not a permanent one. Since she's sick, she's not herself right now.