A type of old snow which has gone through multiple thaw and refreeze cycles and thus is made of numerous small icy grains, though it is not nearly as saturated with water as snowcone slush is; can be hard or somewhat soft depending on recent and current weather conditions.

firnificationnoun

The production of firn by the recrystallization of old snow.

FIROnoun

A service discipline for a queue in which the order of service is random.

firoinnoun

A mannopyranosyl derivative of glyceric acid, an extremolyte found in Rhodothermus marinus

Firouziname

A surname from Persian.

Firozabadname

A city and district of Agra division, Uttar Pradesh, India.

Firponame

A surname from Italian.

firryadj

Abounding in firs.

firstadj

Preceding all others of a series or kind; the ordinal of one; earliest.

first aidnoun

Basic medical care that is administered to a victim of an injury, usually where the injury is slight or where better care is unavailable.

first aid kitnoun

A collection of first aid supplies for treatment of minor injuries or stabilization of major injuries.

First Amendmentname

The amendment to the constitution of the United States pertaining to freedom of speech, freedom of religion and freedom of the press.

first among equalsnoun

A person or position that is formally of equal rank to others in a group, but nonetheless takes a leading role within that group.

first and foremostadv

Primarily; most importantly.

first and lastadj

only

first basenoun

The base after home plate in a counter-clockwise path around a baseball infield.

first basemannoun

The infield defensive player that stands near first base.

first basingnoun

In blackjack, a form of hole carding in which a player peeks at the hole card as the dealer checks it.

first bestadj

Characterized by all optimality conditions being satisfiable.

first bloodnoun

The condition in a duel in which the first one to draw blood from the other wins.

first callnoun

Priority on the use of somebody or something, especially an actor if required in a production.

first catch your hareproverb

Make sure you have a thing before you decide what to do with it.

first choicenoun

The most suitable and most optimal choice.

first classadj

Belonging to the best or top group in a system of classification.

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 143. 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.