13-letter words that end in ning
- unquestioning — indicating or implying a question: a questioning tone in her voice.
- unthreatening — tending or intended to menace: threatening gestures.
- yesterevening — yesterday evening.
- yestermorning — yesterday morning.
- zip fastening — a fastener in the form of a zip
- zone refining — a process of purifying any of various metals and other materials, as germanium or silicon, by passing it in bar form through an induction coil.