different between swift vs effective

English

Etymology

From Middle English swift, from Old English swift (“swift; quick”), from Proto-Germanic *swiftaz (“swift; quick”), from Proto-Indo-European *(s)weyp- (“to twist; wind around”). Cognate with Icelandic svipta (“to pull quickly”), Old English sw?fan (“to revolve, sweep, wend, intervene”). More at swivel.

Pronunciation

• IPA^(key): /sw?ft/
• Homophone: Swift
• Rhymes: -?ft

Adjective

swift (comparative swifter, superlative swiftest)

1. Fast; quick; rapid.
2. Capable of moving at high speeds.

Translations

Noun

swift (plural swifts)

1. A small plain-colored bird of the family Apodidae that resembles a swallow and is noted for its rapid flight.

   Synonyms: needletail, spinetail, swiftlet

2. Any of certain lizards of the genus Sceloporus.

   Synonym: fence lizard, spiny lizard

3. (entomology) A moth of the family Hepialidae, swift moth, ghost moth.
4. (entomology) Any of various fast-flying hesperiid butterflies.
5. A reel for winding yarn.
6. The main cylinder of a carding-machine.
7. (obsolete) The current of a stream.

Translations

Adverb

swift (comparative more swift, superlative most swift)

1. (obsolete, poetic) Swiftly.
   • 1602, William Shakespeare, Troilus and Cressida, II. iii. 263:

     Light boats sail swift, though greater hulks draw deep.

   • 1793, Robert Southey, Lord William

     Ply swift and strong the oar.

Synonyms

• swith

Derived terms

• African swift (Apus barbatus)
• alpine swift (Tachymarptis melba)
• Andean swift (Aeronautes andecolus)
• ashy-tailed swift (Chaetura andrei)
• band-rumped swift (Chaetura spinicaudus)
• Bates's swift (Apus batesi)
• black swift (Cypseloides niger)
• Blyth's swift (Apus leuconyx)
• Bradfield's swift (Apus bradfieldi)
• chimney swift (Chaetura pelagica)
• common swift (Apus apus)
• Cook's swift (Apus cooki)
• Costa Rican swift (Chaetura fumosa)
• crested swift (Hemiprocnidae spp.)
• dark-rumped swift (Apus acuticauda)
• emerald swift (Sceloporus malachiticus)
• Eurasian swift, European swift (Apus apus)
• fence swift (Sceloporus undulatis)
• Fernando Po swift (Apus sladeniae)
• Forbes-Watson's swift (Apus berliozi)
• fork-tailed swift
• ghost swift (Hepialidae)
• great dusky swift (Cypseloides senex)
• great swift (Hepialus humuli)
• grey-rumped swift (Chaetura cinereiventris)
• little swift (Apus affinis)
• mottled swift (Tachymarptis aequatorialis)
• needle-tailed swift (Hirundapus caudacutus)
• Nyanza swift (Apus niansae)
• orange swift (Triodia sylvina)
• Pacific swift (Apus pacificus)
• pallid swift (Apus pallidus)
• palm swift (Cypsiurus spp.)
• pine swift (Sceloporus undulatus)
• sagebrush swift (Sceloporus graciosus)
• Salim Ali's swift (Apus salimali)
• scarce swift (Schoutedenapus myoptilus)
• Schouteden's swift (Schoutedenapus schoutedeni)
• Sick's swift (Chaetura meridionalis)
• sooty swift (Cypseloides fumigatus)
• spine-tailed swift (Hirundapus caudacutus)
• spot-fronted swift (Cypseloides cherriei)
• swift fox (Vulpes velox)
• swift fruit bat (Thoopterus nigrescens)
• swift moth
• swiftness
• swiftlet (Apodidae spp.)
• swiftly
• swift parrot (Lathamus discolor)
• swiftwater
• tree swift, treeswift (Hemiprocnidae spp.)
• white-chested swift (Cypseloides lemosi)
• white-chinned swift (Cypseloides cryptus)
• white-collared swift (Streptoprocne zonaris)
• white-naped swift (Streptoprocne semicollaris)
• white-throated swift (Aeronautes saxatalis)
• white-tipped swift (Aeronautes montivagus)

Old English

Etymology

From the verb sw?fan.

Pronunciation

• IPA^(key): /swift/

Adjective

swift (comparative swiftra, superlative swiftost)

1. swift, quick

Declension

Derived terms

• swiftl??e
• swiftnes

Descendants

• English: swift

English

Etymology

From French effectif, from Latin effect?vus (“productive; effective”), from effici? (“I make; I bring about”).

Pronunciation

• (weak vowel distinction) IPA^(key): /??f?kt?v/
• (weak vowel merger) IPA^(key): /??f?kt?v/
• Rhymes: -?kt?v

Adjective

effective (comparative more effective, superlative most effective)

1. Having the power to produce a required effect or effects.

   Synonym: efficacious

2. Producing a decided or decisive effect.
   • 1650, Jeremy Taylor, The Rule and Exercises of Holy Living

     Whosoever is an effective, real cause of doing his neighbour wrong, is criminal.

3. Efficient, serviceable, or operative, available for useful work.

4. Actually in effect.

5. (geometry, of a cycle or divisor) Having no negative coefficients.
6. (physics, for any effective theory) approximate; Not describing the fundamental dynamic changes in some system as they happen.

Usage notes

Webster's Revised Unabridged Dictionary from 1913 still lists efficient and effective as synonyms, but all major dictionaries now show that these words now only have different meanings in careful use. Use of both for the other meaning is however widespread enough that Longman's Exam Dictionary, for example, finds it necessary to proscribe the use of one for the other with several examples at each entry and provides the following summary:

• efficient = working quickly and without waste
• effective = having the desired effect

Related terms

Translations

Noun

effective (plural effectives)

1. (military) a soldier fit for duty
   • 1876, Dabney Herndon Maury, Southern Historical Society Papers: Volume 2, Number 4, Recollections of the Elkhorn Campaign:

     The Army of the West reached Corinth sometime after the battle of Shiloh. We were 15,000 effectives, and brought Beauregard's effective force up to 45,000 men.

French

Pronunciation

• IPA^(key): /e.f?k.tiv/
• Homophone: effectives

Adjective

effective

1. feminine singular of effectif

Latin

Adjective

effect?ve

1. vocative masculine singular of effect?vus