re-, red-

(Latin: back, backward, again; used as a prefix)

recalcitrant
1. Marked by stubborn resistance to and defiance of authority or guidance.
2. Stubbornly resisting the authority of another person or group.
3. Resisting authority or control; not obedient or compliant.
4. Difficult to deal with or to operate.
5. Etymology: from French récalcitrant; literally, "kicking back", past participle of recalcitrare, "to kick back"; from re-, "back" + Latin calcitrare, "to kick"; from calx, calcis, "heel".

Being "stubborn as a mule" is a good example of being recalcitrant.

recant (verb), recants; recanted; recanting
1. To formally reject or to disavow a formerly held belief, usually under pressure: The witness was pressured to recant her testimony in court.
2. To deny believing in something or to withdraw something previously said: When confronted with new evidence, the spy recanted her evidence which had sounded so believable before.
3. To make a formal retraction or disavowal of a previously held statement or belief: The senator agreed to recant his allegations about the President and signed a formal statement indicating his new position.
4. Etymology: from about 1535, from Latin recantare, "to recall, to revoke"; from re-, "back" + cantare, "to sing, to chant".

A loan-translation of Greek palinoidein, "recant", from palin, "back" + oeidein, "to sing".

To openly take back or to retract a promise.
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To withdraw a statement or belief that was formerly thought to be true.
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recapitulate (verb), recapitulates; recapitulated; recapitulating
1. To summarize the main ideas: When the professor had finished his lecture, a student recapitulated the talk in a few words.
2. To repeat briefly: The speaker was told that his point was understood and that it was not necessary to recapitulate anything.
3. Etymology: from Latin recapitulare, "to sum up"; from re-, "again" + capitulare, "to draw up under headings"; from capitulum, "little head", "chapter"; from caput, "head".
To summarize or to briefly repeat statements.
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recapitulation
recede (verb), recedes; receded; receding
1. To move back or away from a limit, point, or mark; for example, the people waited for the flood waters to recede before they could return to their homes.
2. To slope backward.
3. To become or seem to become fainter or more distant.
4. To withdraw or to retreat.
5. Etymology: from French receder, from Latin recedere, "to go back, to withdraw"; from re-, "back" + cedere, "to go".
receipt (s) (noun), receipts (pl)
receive (verb), receives; received; receiving
1. To get, to acquire, or to take into one's possession: "Jane received many birthday gifts."
2. Etymology: from Old North French (the dialect of northern France before the 1500s), receivre, Old French recoivre; from Latin recipere, receptus "to regain, to take back, to recover, to take in"; from re-, "back" + -cipere, a combining form of capere, "to take".
reciprocal
1. Something that is mutual or done in return; given or felt by each toward the other; mutual: "We had a reciprocal respect for each other."
2. Given, performed, felt, etc., in return; given or shown by each of two sides or people to the other.
3. Corresponding; matching; complementary; equivalent: "We were able to have reciprocal privileges at other health clubs."
4. In grammar, with reference to a pronoun or verb; expressing mutual relationship or action: “Each other” and “one another” are reciprocal pronouns.
5. Inversely related or proportional; opposite.
6. In mathematics, noting expressions, relations, etc., involving reciprocals; such as, a reciprocal function.
7. Either of a pair of numbers whose product is 1; for example, the number 3 is the reciprocal of , and is the reciprocal of 3.
8. Etymology: from Latin reciprocus, "turning back the same way, alternating", which stands for reco-procos and is a compound of the adjectives recos, "turning backward", and procos, "turning forward"; therefore, reciprocus originally meant "turning backward and forward".

Reciprocal, when all things are considered, is a compound adjective based on the elements re-, "back, backward" and pro-, "for, forward".

reciprocality
A relation of mutual dependence or action or influence.
reciprocally
1. In a reciprocal manner; so that each affects the other, and is equally affected by it; interchangeably; mutually.
2. In the manner of reciprocals.
3. In mathematics: reciprocally proportional; proportional, as two variable quantities, so that the one shall have a constant ratio to the reciprocal of the other.
reciprocalness
The quality or condition of being reciprocal; mutual return; alternateness.
reciprocalness
The quality or condition of being reciprocal; mutual return; alternateness.
reciprocate
1. To give, feel, do, etc., in return.
2. To give and to receive mutually.
3. Etymologically, "to move backward" and "forward".
reciprocating
1. Interchanging; each person or group giving or doing to the other the same thing; to give, to feel, etc., in return.
2. To give and to receive reciprocally; to interchange; such as, to reciprocate favors.
3. To cause or to move alternately backward and forward.
4. To make a return, as for something given.
5. To move alternately backward and forward.
reciprocation
1. An act or instance of reciprocating; a reciprocal action or arrangement involves two people or groups of people who behave in the same way or agree to help each other and give each other advantages.
2. A returning, usually for something given.
3. A mutual giving and receiving.
4. In prosthodontics, the means by which one part of an appliance is made to counter the effect created by another part.

Prosthodontics refers to a dental specialty concerned with the restoration and maintenance of oral function by the replacement of missing teeth and structures by artificial devices or prostheses.

5. In electronics, a process by which a reciprocal impedance (or network) is derived from a given impedance (or network).