Five new words

Here are five new words:

1. Gallimaufry (n.) - a dish made from a mixture of leftover food
2. Thixotropy (n.) - the property of a fluid that becomes less viscous when agitated and more viscous when left still
3. Velleity (n.) - a mild or slight desire
4. Selenite (n.) - a type of crystal formed from the evaporation of saltwater
5. Ultracrepidarian (n.) - a person who gives opinions on matters beyond their knowledge or expertise