| DESULPHURATING | • desulphurating v. Present participle of desulphurate. • DESULPHURATE v. to remove sulphur from.
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| DESULPHURING | • desulphuring v. Present participle of desulphur. • DESULPHUR v. to remove sulphur from, also DESULFUR.
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| DESULPHURISING | • desulphurising v. Present participle of desulphurise. • DESULPHURISE v. to remove the sulphur from a compound, also DESULFURISE, DESULFURIZE, DESULPHURIZE.
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| DESULPHURIZING | • desulphurizing v. Present participle of desulphurize. • DESULPHURIZE v. to remove the sulphur from a compound, also DESULFURISE, DESULFURIZE, DESULPHURISE.
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| DISHUMOURING | • dishumouring v. Present participle of dishumour. • DISHUMOUR v. (obsolete) to put out of humour.
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| DOUGHNUTLIKE | • doughnutlike adj. Resembling a doughnut. • DOUGHNUTLIKE adj. like a doughnut.
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| DOUGHNUTTING | • doughnutting n. (UK) A method of fare evasion by buying tickets only covering the beginning and the end of a journey. • DOUGHNUTTING n. the act of surrounding a speaker to give the impression of a packed house.
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| DOUGHNUTTINGS | • DOUGHNUTTING n. the act of surrounding a speaker to give the impression of a packed house. | 
| UNDELIGHTFUL | • undelightful adj. Not delightful. • UNDELIGHTFUL adj. not delightful.
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| UNDERBRUSHING | • underbrushing v. Present participle of underbrush. • UNDERBRUSH v. to clear of underbrush.
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| UNDERBUSHING | • underbushing v. Present participle of underbush. • UNDERBUSH v. to clear of underbrush.
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| UNDERNOURISHING | • undernourishing v. Present participle of undernourish. • UNDERNOURISH v. to nourish insufficiently.
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| UNDERTHRUSTING | • underthrusting v. Present participle of underthrust. • UNDERTHRUST v. to insert (a faulted rock mass) into position under a passive rock mass.
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| UNDISTINGUISHED | • undistinguished adj. Not distinguished: not marked by conspicuous qualities. • undistinguished adj. Not distinguished: not having an air of distinction.
 • UNDISTINGUISHED adj. not distinguished.
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| UNEXTINGUISHED | • unextinguished adj. Not extinguished. • UNEXTINGUISHED adj. not extinguished.
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| UNNEIGHBOURED | • unneighboured adj. Without neighbours. • UNNEIGHBOURED adj. without neighbours, also UNNEIGHBORED.
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| UNSHROUDING | • unshrouding v. Present participle of unshroud. • UNSHROUD v. to remove the shroud from; to uncover.
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| UPHAUDING | • UPHAUD v. (Scots) to maintain, warrant. | 
| UPTHUNDERING | • upthundering v. Present participle of upthunder. • UPTHUNDER v. to send up a noise like thunder.
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