English Words: F
18,613 words · Page 73 of 373
Either of two mathematical constants that express ratios in a bifurcation diagram for a nonlinear map.
Any of a set of influential psychiatric diagnostic criteria developed from the late 1950s to the early 1970s.
A monoclinic pale olive green mineral containing arsenic, hydrogen, iron, lead, oxygen, sulfur, and zinc.
A rare hereditary disorder marked by various combinations of microcephaly, limb malformations, esophageal and duodenal atresias, and sometimes learning disability or mental retardation.
The strong spirit produced at the beginning of distillation (strong feints, also foreshot), and the weak spirit produced at the end (weak feints, also tailings or tail).
A symmetric structure used in the construction of block ciphers. It is an iterated cipher with an internal function called a round function.
A Portuguese trading post, usually fortified and built in coastal areas along the West and East African coasts, Indian Ocean and Brazil, from 1445 onward.
A trigonal-ditrigonal pyramidal mineral containing calcium, cerium, chlorine, fluorine, hafnium, hydrogen, iron, lanthanum, manganese, niobium, oxygen, silicon, sodium, strontium, titanium, and zirconium.
Spelling & Dictionary Insight
The English alphabetical index for the letter F contains 18,613 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 373 pages, and you are currently viewing page 73. 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 "F" 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.