change (v.)

c. 1200, "to alter, make different, change" (transitive); early 13c. as "to substitute one for another;" mid-13c. as "to make (something) other than what it was, cause to turn or pass from one state to another;" from late 13c. as "to become different, be altered" (intransitive), from Old French changier "to change, alter; exchange, switch," from Late Latin cambiare "to barter, exchange," extended form of Latin cambire "to exchange, barter," a word of Celtic origin, from PIE root *kemb- "to bend, crook" (with a sense evolution perhaps from "to turn" to "to change," to "to barter"); cognate with Old Irish camm "crooked, curved;" Middle Irish cimb "tribute," cimbid "prisoner;" see cant (n.2).

From c. 1300 as "undergo alteration, become different." In part an abbreviation of exchange. From late 14c. especially "to give an equivalent for in smaller parts of the same kind" (money). Meaning "to take off clothes and put on other ones" is from late 15c. Related: Changed;changing. To change (one's) mind is from 1590s.

change (n.)

c. 1200, "act or fact of changing," from Anglo-French chaunge, Old French change "exchange, recompense, reciprocation," from changier "to alter; exchange; to switch" (see change (v.)). Related: changes.

Meaning "a different situation, variety, novelty" is from 1680s (as in for a change, 1690s). Meaning "something substituted for something else" is from 1590s. Meaning "place where merchants meet to do business" is from c. 1400. Meaning "the passing from life to death" is biblical (161os).

The financial sense of "balance of money returned after deducting the price of a purchase from the sum paid" is first recorded 1620s; hence to make change (by 1865). Bell-ringing sense is from 1610s, "any sequence other than the diatonic." Hence the figurative phrase ring changes "repeat in every possible order" (1610s). Figurative phrase change of heart is from 1828. In reference to women, change of life "final cessation of menstruation" is recorded from 1834.

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Definitions of change from WordNet
change (v.)
cause to change; make different; cause a transformation;
The discussion has changed my thinking about the issue
Synonyms: alter / modify
change (v.)
undergo a change; become different in essence; losing one's or its original nature;
The weather changed last night
She changed completely as she grew older
change (v.)
become different in some particular way, without permanently losing one's or its former characteristics or essence;
her mood changes in accordance with the weather
Synonyms: alter / vary
change (v.)
lay aside, abandon, or leave for another;
The car changed lanes
Synonyms: switch / shift
change (v.)
change clothes; put on different clothes;
change (v.)
exchange or replace with another, usually of the same kind or category;
He changed his name
Synonyms: exchange / commute / convert
change (v.)
give to, and receive from, one another;
Would you change places with me?
Synonyms: exchange / interchange
change (v.)
change from one vehicle or transportation line to another;
She changed in Chicago on her way to the East coast
Synonyms: transfer
change (v.)
become deeper in tone;
His voice began to change when he was 12 years old
Synonyms: deepen
change (v.)
remove or replace the coverings of;
Father had to learn how to change the baby
After each guest we changed the bed linens
change (n.)
an event that occurs when something passes from one state or phase to another;
the change was intended to increase sales
this storm is certainly a change for the worse
change (n.)
a relational difference between states; especially between states before and after some event;
he attributed the change to their marriage
change (n.)
the action of changing something;
the change of government had no impact on the economy
his change on abortion cost him the election
change (n.)
the result of alteration or modification;
there had been no change in the mountains
there were marked changes in the lining of the lungs
change (n.)
the balance of money received when the amount you tender is greater than the amount due;
I paid with a twenty and pocketed the change
change (n.)
a thing that is different;
he inspected several changes before selecting one
change (n.)
a different or fresh set of clothes;
she brought a change in her overnight bag
change (n.)
coins of small denomination regarded collectively;
he had a pocketful of change
change (n.)
money received in return for its equivalent in a larger denomination or a different currency;
he got change for a twenty and used it to pay the taxi driver
change (n.)
a difference that is usually pleasant;
it is a refreshing change to meet a woman mechanic
Synonyms: variety