adj

• (informal) Lacking common sense.
  "If a person were to wash only one side of his face and continually neglect the other side, he would soon become a local curiosity–would be considered dippy."
• (informal) Having romantic feelings for; excited or enthusiastic about.
  "“I’ve read in the papers that ye’re dippy about secon’-hand stuff,” she teased, referring to his mania for antiques […]"
• (UK, informal) Of an egg: cooked so that the yolk remains runny and can be used for dipping.
  "The flat was his domain until ten a.m., he informed her brusquely. He liked reading the paper and partaking of a dippy egg in solitude."
• (informal) Involving or suited to dipping.
  "Also, salad dressing makes a great dippy sauce. Avoid low-fat salad dressings, which are usually loaded with fillers, sugar, and sodium."