13-letter words containing i, b, o, g
- unambiguously — plainly, clearly
- undiagnosable — unable to be diagnosed
- unneighboured — having no neighbour or neighbours
- unneighbourly — unfriendly and unhelpful
- vegetable oil — any of a large group of oils that are esters of fatty acids and glycerol, obtained from the leaves, fruit, or seeds of plants.
- verbigeration — the condition or instances of repeating the same word or sentence against one's will as a symptom of a psychiatric disorder
- warping board — a rectangular board containing evenly spaced pegs at each end on which the warp is wound in preparation for weaving.
- waterboarding — a harsh interrogation technique in which water is poured onto the face and head of the immobilized victim so as to induce a fear of drowning.
- wild bergamot — a plant, Monarda fistulosa, of the mint family, native to eastern North America, having a rounded cluster of lilac-colored or purple flowers, growing in dry places.
- wine-bottling — the process of transferring wine from a large container to individual bottles