Where does “cost-free” come from?

cost-free (English) comes from English cost, from Middle English cost, from Middle English costen, from Old French couster, from Medieval Latin costo, from Latin consto, from Latin com-, from Latin con- — whale, sea monster; abyss.

cost-free (English): Of software, content, or materials, without any monetary payment or licensing fees

Definitions

  1. Of software, content, or materials, without any monetary payment or licensing fees

Ancestry of “cost-free”, step by step

cost-free traces back through two separate lines of ancestry.

via English cost

StepLanguageWordMeaning
1EnglishcostTo incur a charge of; to require payment of a (specified) price
2Middle Englishcostmeans
3Middle Englishcostento cost
4Old FrenchcousterAlternative form of coster; to cost
5Medieval Latincosto
6Latinconstoto stand together; to stand still; to remain the...
7Latincom-allomorph of con-
8Latincon-Used in compounds to indicate a being or bringing...
9Latincumwith, along with; at; -fold
10Old LatincomAlternative form of cum
11Proto-Italickomwith, along, at
12Proto-Indo-Europeanḱómbeside, near, by, with
13Proto-Indo-EuropeanḱeDeictic particle, here; Post-positional...
14Middle Englishkyt
15Russianкитwhale; genitive plural of ки́та
16Old Church Slavonicкитъwhale
17Ancient Greekκῆτοςwhale, sea monster; abyss

via English Free

StepLanguageWordMeaning
1EnglishFreeUnconstrained
2EnglishfallerOne who falls; A fruit that falls from the tree,...
3English-erA person or thing that does an action indicated...
4Middle English-eragentive suffix; agent noun suffix
5Old French-erAlternative form of -ier, verbal suffix;...
6Latin-ārefirst conjugation
7Proto-Italic-āōForms primarily denominative verbs
8Proto-Indo-European-eh₂yétiCreates iterative/ frequentative/ intensive...
9Proto-Indo-European-yétiCreates intransitive, often deponent,...
10Proto-Indo-Europeanyé-
11Chichewaiyehe, she
Every word from Ancient Greek κῆτος