different between effectiveness vs knack

English

Etymology

effective +? -ness

Pronunciation

Noun

effectiveness (countable and uncountable, plural effectivenesses)

1. The property of being effective, of achieving results.

   The effectiveness of the drug was well established.

2. The capacity or potential for achieving results.
3. The degree to which something achieves results.

   He questioned the effectiveness of the treatment.

   • 2013, Phil McNulty, "[1]", BBC Sport, 1 September 2013:

     United were having more possession but a sign of the effectiveness of Liverpool's defence was that it took the visitors 76 minutes to force Mignolet into serious action, when he dived to punch away a shot from substitute Nani.

Related terms

• effect
• effective
• effectivity
• effector
• effectual
• effectuate
• efficacious
• efficacity
• efficacy
• efficiency
• efficient

Translations

English

Etymology

Use as "special skill" from 1580. Possibly from 14th century Middle English krak (“a sharp blow”), knakke, knakken, from Middle Low German, by onomatopoeia. Latter cognate to German knacken (“to crack”). See also crack.

Pronunciation

• IPA^(key): /næk/
• Audio (UK)

• Rhymes: -æk

Noun

knack (plural knacks)

1. A readiness in performance; aptness at doing something. [from 1580]

   Synonyms: skill, facility, dexterity

   • 2005, Plato, Sophist. Translation by Lesley Brown. 254a.

     The sophist runs for cover to the darkness of what is not and attaches himself to it by some knack of his;
2. A petty contrivance; a toy.

   Synonyms: plaything, knickknack, toy

3. Something performed, or to be done, requiring aptness and dexterity. [from mid 14th c.]

   Synonyms: trick, device

Derived terms

• knackless

Translations

Verb

knack (third-person singular simple present knacks, present participle knacking, simple past and past participle knacked)

1. (obsolete, Britain, dialect) To crack; to make a sharp, abrupt noise; to chink.
2. To speak affectedly.

   (Can we find and add a quotation of Halliwell to this entry?)

Translations

References