| BURRAMUNDIS | • BURRAMUNDI n. (Native Australian) any of several Australian river-fish, also BARRAMUNDA, BARRAMUNDI. | 
| GROUNDBURST | • groundburst n. The explosion of a bomb dropped from the air when it hits the ground. • GROUNDBURST n. the detonation of a nuclear warhead at ground level.
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| GROUNDBURSTS | • groundbursts n. Plural of groundburst. • GROUNDBURST n. the detonation of a nuclear warhead at ground level.
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| SURTURBRAND | • surturbrand n. A fibrous brown coal or bituminous wood. • SURTURBRAND n. (Icelandic) a lignite found interbedded with lavas in Iceland, also SURTARBRAND.
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| SURTURBRANDS | • SURTURBRAND n. (Icelandic) a lignite found interbedded with lavas in Iceland, also SURTARBRAND. | 
| UNCIRCUMSCRIBED | • uncircumscribed adj. Not circumscribed. • UNCIRCUMSCRIBED adj. not circumscribed.
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| UNDERBRUSH | • underbrush n. The small trees and other plants that clutter the floor of a forest. • underbrush v. (Transitive) To clear (an area) of underbrush.
 • underbrush v. (Intransitive) To work among the underbrush.
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| UNDERBRUSHED | • underbrushed v. Simple past tense and past participle of underbrush. • UNDERBRUSH v. to clear of underbrush.
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| UNDERBRUSHES | • underbrushes n. Plural of underbrush. • UNDERBRUSH n. shrubs, small trees, and the like, in a wood or forest, growing beneath large trees.
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| UNDERBRUSHING | • underbrushing v. Present participle of underbrush. • UNDERBRUSH v. to clear of underbrush.
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| UNDERBUILDERS | • underbuilders n. Plural of underbuilder. • UNDERBUILDER n. a subordinate or assistant builder.
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| UNDERSCRUB | • UNDERSCRUB n. bushes etc. | 
| UNDERSCRUBS | • UNDERSCRUB n. bushes etc. | 
| UNDERSHRUB | • undershrub n. A low-growing shrub. • UNDERSHRUB n. a shrub smaller than the usual shrub.
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| UNDERSHRUBS | • undershrubs n. Plural of undershrub. • UNDERSHRUB n. a shrub smaller than the usual shrub.
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| UNDERSUBSCRIBED | • undersubscribed adj. Having too few subscribers or subscriptions. • undersubscribed v. Simple past tense and past participle of undersubscribe.
 • UNDERSUBSCRIBED adj. insufficiently subscribed.
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