English Words: R

21,470 words · Page 345 of 430

robotnikinnoun

A potential inhibitor of the hedgehog signalling pathway.

robotocracynoun

rule by robots

robotologynoun

The field of science and engineering that deals with the study of robots.

robotripverb

To take the antitussive drug dextromethorphan recreationally.

robotrippingverb

present participle and gerund of robotrip

robotrixnoun

A female robot, or one with feminine characteristics.

robotrynoun

robotics

robottyadj

Resembling or characteristic of a robot.

Robotynename

A village in Tokmak urban hromada, Polohy Raion, Zaporizhzhia Oblast, Ukraine, settled in 1818, incorporated in 1869.

robovacnoun

robotic vacuum cleaner

robovirusnoun

Any virus that is transmitted by an rodent.

Robroystonname

An outer suburb in the City of Glasgow council area, Scotland (OS grid ref NS6368).

Robsonname

A surname transferred from the given name.

Robstenname

The couple consisting of celebrities Robert Pattinson and Kristen Stewart, together from 2009 to 2013.

Roburname

A male given name from a Latin etymon.

Robur Carolinumname

A former constellation, between Crux and Carina, supposed to represent the oak where Charles II was said to have hidden from the troops of Oliver Cromwell after the Battle of Worcester.

roburitenoun

An explosive formerly used in mining, made from chlorinated dinitrobenzene oxidized by ammonium nitrate.

roburoidadj

Characteristic of oaks of the species Quercus robur.

robustadj

Able to withstand adverse conditions.

robustanoun

Any plant of the species Coffea canephora of coffee plants, native to Africa, cultivated widely in Brazil.

robustfuladj

Robust.

robustfullyadv

In a robust manner.

robusticitynoun

robustness

robustificationnoun

A form of optimization whereby a system is made less sensitive to the effects of random variability, or noise.

robustifyverb

To make more robust, that is, more tolerant of unexpected events.

robustiousadj

Boisterous.

robustiouslyadv

In a robustious manner.

robustiousnessnoun

Quality of being robustious.

robustitynoun

robustness

robustizeverb

To make robust.

robustlyadv

In a robust manner.

robustnessnoun

The quality of being robust.

robustotoxinnoun

Alternative spelling of robustoxin.

robustoxinnoun

The lethal toxin from the Sydney funnel-web spider.

Robyname

A surname originating as a patronymic.

Robăneștiname

A commune of Dolj County, Romania.

rocnoun

An enormous mythical bird in Eastern legend.

rocaglamidenoun

A particular flavagline.

rocaillenoun

Artificial rockwork made of rough stones and cement, as for gardens.

rocambolenoun

The sand leek, Allium scorodoprasum

rocambolesqueadj

Fantastic, incredible, fabulous.

roccellanoun

Any of a group of lichens of genus Roccella, especially Rocella tinctoria from which litmus is extracted.

roccellaceousadj

Belonging to the family Roccellaceae of fungi.

roccellic acidnoun

A dibasic acid, C₁₇H₃₂O₄, of the oxalic series, found in archil (Roccella tinctoria, etc.), and other lichens.

Rocconame

A male given name from Italian, of mostly American usage.

Rocesname

A neighbourhood of Gijón, Asturias, in northwestern Spain.

Rochname

A river in Greater Manchester, England, which joins the River Irwell.

rochambeaunoun

Alternative form of roshambo.

Rochdalename

A town and metropolitan borough in Greater Manchester, England (OS grid ref SD8913).

rochenoun

One of various types of rock or geological strata.

Spelling & Dictionary Insight

The English alphabetical index for the letter R contains 21,470 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 430 pages, and you are currently viewing page 345. Every row above is a dictionary-backed entry with a canonical slug, and each links through to a full definition page with pronunciation, senses, etymology, and related-word data where available.

On this page 50 of 50 entries carry a part-of-speech tag and 50 carry at least one stored definition. Coverage varies across letters because Wiktionary volunteers build entries at different speeds for different parts of the alphabet, letters with common starting sounds (S, C, T, P) usually have the densest coverage, while less frequent starters (X, Q, Z) tend to have shorter but more specialised lists. PlainSpell surfaces whatever data is present and links back to the source when a definition is not yet recorded.

For readers using this index as a spelling reference, the guarantee is that every form you see on the list is a documented English headword, not a guess, not a derived inflection lacking a lemma row. If a word you expected to find is absent from the "R" list, it usually means the form exists only as an inflection of another lemma (e.g. a past participle stored under the infinitive) or the entry has not yet been imported from Wiktionary. Use the search bar or the misspelling lookup to resolve these cases.