13-letter words containing i, f, s, a
- cliff swallow — an American swallow, Petrochelidon pyrrhonota, that has a square-tipped tail and builds nests of mud on cliffs, walls, etc
- cobaltiferous — containing cobalt
- confederacies — Plural form of confederacy.
- confessionals — Plural form of confessional.
- confessionary — of or relating to confession, especially auricular confession of sins.
- confirmations — Plural form of confirmation.
- confiscatable — confiscable
- conformations — Plural form of conformation.
- confusticated — Simple past tense and past participle of confusticate.
- conway's life — Conway's Game of Life
- coralliferous — bearing or containing coral
- cottage fries — potatoes that have been thinly sliced and then fried
- craftsmanlike — Resembling or characteristic of a craftsman.
- craftsmanship — Craftsmanship is the skill that someone uses when they make beautiful things with their hands.
- declassifying — Present participle of declassify.
- defamiliarise — Alternative spelling of defamiliarize.
- defeasibility — capable of being annulled or terminated.
- defloration's — the act of deflowering.
- deforestation — to divest or clear of forests or trees: Poor planning deforested the area in ten years.
- densification — the act of becoming or making more dense
- desulfuration — to desulfurize.
- differentials — Plural form of differential.
- disaffiliated — Simple past tense and past participle of disaffiliate.
- disaffirmance — to deny; contradict.
- disafforested — Simple past tense and past participle of disafforest.
- disaster fund — a fund set up to relieve people or countries afflicted by a disaster
- disfiguration — an act or instance of disfiguring.
- disfranchised — Simple past tense and past participle of disfranchise.
- disfranchises — Third-person singular simple present indicative form of disfranchise.
- disfunctional — dysfunction.
- disgracefully — In a disgraceful manner.
- disinfectants — Plural form of disinfectant.
- disqualifying — Present participle of disqualify.
- dissatisfying — Present participle of dissatisfy.
- distastefully — In a distasteful manner.
- distress flag — any flag flown by a vessel to show that it is in distress, as an ensign flown at half-mast or upside down.
- diversifiable — to make diverse, as in form or character; give variety or diversity to; variegate.
- draft version — a preliminary version
- draftsmanship — a person employed in making mechanical drawings, as of machines, structures, etc.
- dwarf ginseng — a plant, Panax trifolius, of eastern North America, having globe-shaped clusters of small, white flowers and yellow fruit.
- dysfunctional — not performing normally, as an organ or structure of the body; malfunctioning.
- efficaciously — capable of having the desired result or effect; effective as a means, measure, remedy, etc.: The medicine is efficacious in stopping a cough.
- elephant fish — a large marine fish, Callorhinchus milii, of southwest Pacific waters, having a snout resembling an elephant's trunk
- enfranchising — Present participle of enfranchise.
- facetiousness — (uncountable) The state of being facetious.
- facial tissue — a soft, disposable paper tissue especially for cleansing the face or for use as a handkerchief.
- factorisation — Alternative spelling of factorization.
- facts of life — any aspect of human existence that must be acknowledged or regarded as unalterable: Old age is a fact of life.
- fairy swallow — a variety of domestic fancy pigeon having blue-and-white plumage and heavily muffed feet
- fairy-slipper — Calypso (def 2).