Origins
The verb 'share' encodes one of humanity's oldest social acts: dividing a resource among members of a group. Its etymology reveals that this concept was originally understood in the most concrete, physical terms — not as generosity or communal spirit but as the act of cutting something into pieces.
The verb 'share' developed in Middle English from the noun 'share,' which had existed since Old English as 'scearu,' meaning 'a cutting, a shearing, a division, a part allotted, a portion.' The noun descended from Proto-Germanic *skarō (a cutting, a division), from the verb *skeraną (to cut, to shear), from PIE *sker- (to cut). The verb 'to share' — meaning to divide and distribute — is first clearly attested in the late sixteenth century, making it a relatively late denominative formation from a very old noun.
The PIE root *sker- (to cut) is one of the most productive roots in the Indo-European family, generating words across dozens of languages and semantic fields. In the Germanic branch alone, it produced 'shear' (to cut — the most direct descendant), 'share' (a cut portion), 'scar' (a mark left by cutting), 'score' (originally a notch cut into a tally stick — hence the counting sense), 'short' (cut short, curtailed), 'shirt' and 'skirt' (both originally garments that were cut — a cut piece of cloth), and 'sharp' (having a cutting edge).
Latin Roots
Outside Germanic, the same root yielded Latin 'cortex' (bark — what is 'cut off' a tree, source of 'cortex' and 'cork'), Latin 'corium' (leather, hide — stripped or cut from an animal), Greek 'keirein' (to cut, to shear), Lithuanian 'skirti' (to separate, divide), and Sanskrit 'kṛntáti' (he cuts). The range of derivatives demonstrates how central the concept of cutting was to early Indo-European speakers — it underlaid not just physical cutting but division, separation, marking, counting, and shortening.
The Old English noun 'scearu' had two main meanings that survive in modern English as distinct senses of 'share.' The first was an allotted portion — a share of land, a share of an inheritance, a share of profit. This is the sense that produced the financial term 'share' (a share of stock, a unit of ownership in a company) and 'shareholder.' The second was a cutting blade, specifically the blade of a plough. The 'ploughshare' (or 'plowshare') is the sharp metal plate that cuts the furrow in the soil, and this sense preserves the word's original meaning of 'something that cuts' more faithfully than the abstract sense of 'portion.' The biblical image of beating swords into ploughshares (Isaiah 2:4) thus pairs two cutting instruments, exchanging one that cuts flesh for one that cuts earth.
The verb 'to share' emerged in the sixteenth century and rapidly acquired the range of meanings it holds today. The core sense — to divide a resource and distribute portions — extended naturally to joint use (share a room, share a car), mutual experience (share a moment, share a feeling), and communication (share information, share a story). The digital-age sense of 'sharing' content on social media is the latest extension, treating information as a resource that can be distributed to many people simultaneously.
Old English Period
The compound 'shareware' — software distributed freely with a request for voluntary payment — was coined in the 1980s and captures the communal connotation that 'share' had developed by the late twentieth century. Where the original Old English 'scearu' implied cutting and division (inherently reducing each person's portion), the modern verb 'share' often implies abundance: sharing digital content does not diminish the original, and sharing experiences can multiply rather than divide them.
The phrase 'to share and share alike,' meaning to divide equally among all parties, has been used since the sixteenth century, particularly in legal contexts describing the equal distribution of an inheritance. The redundancy of the phrase — 'share' already implies equal division — suggests emphasis: not just dividing, but dividing fairly.
The development from 'cutting' to 'sharing' illuminates a deep truth about human social organization. In a subsistence economy, generosity begins with a blade: an animal is killed, a loaf is baked, and the leader's first act of distribution is to cut it into portions. The linguistic evidence suggests that Proto-Germanic speakers understood sharing not as an emotional impulse but as a practical technology — the technology of cutting things into pieces so that everyone gets some. Generosity was, at root, good butchery.
Proto-Indo-European Roots
The related word 'shear' preserves the original verbal sense of cutting. Shearing sheep — cutting their wool — is the most direct continuation of the PIE root *sker- in modern English agriculture. 'Shears' (large cutting scissors) maintains the instrumental sense. The geological term 'shear' (a deformation in which parallel planes slide past each other) extends the cutting metaphor into physics.
In modern usage, 'share' has become one of the warmest words in English, associated with generosity, community, and connection. The digital age's 'share button' has made the word perhaps more common than at any point in its history. Yet beneath its contemporary warmth lies the cold steel of its origin: a blade, a cut, a piece separated from the whole and handed to another.