Actual problems of modern science, education and training

Key words: reduplication , etymology, onomatopoeias, unrestrained, word- building identification, natural language, combination
Introduction. Etymology (from the Greek "truth" and "concept, doctrine") - 1) a section of linguistics that studies the origin of words; 2) any hypothesis about the origin of a particular word (less often - a different language unit, such as a suffix or idiomatic expression). In this last understanding, “near etymology” is distinguished - the identification of word-building connections of a certain word with other words of the same language that have become obscured over time - and “distant etymology” - the identification of word connections outside the language under consideration.
The words of any natural language can be - according to their origin - divided into the following groups:

1. 
   Native words, i.e. words inherited from the ancestor language (the largest group);
   
2. 
   Words formed with the help of existing (or previously existing) word-building means in the language;
   
3. 
   Words borrowed from other languages;
   
4. 
   Artificially created words (a group not represented in all languages);
   
5. 
   Words resulting from various "linguistic errors".
   

Words that are native in a given language could belong to any of the above groups in the ancestor language. For any word that is a derivative in a given language, one can find out from which word and with the help of what word-building means it is formed.
Materials and Methods. In this section, we will consider only some of the most interesting reduplicative words from the point of view of their origin.
The English word "flip-flop" (n.) has two meanings: 1) sandals or slippers; 2) trigger (therm.), electronic switching circuit. It was formed from interjections-onomatopoeia flip (clap) and flop (slap). The first mention of this word was recorded in 1920, but then it meant a lobe (earlobe - earlobe), but to our time it has not retained this meaning. Later it was used in various onomatopoeias. The word received its most common meaning (sandal) in the 1960s. In 1889, it appeared again, but this time it means the sound of footsteps. The phrase changed meaning drastically in 1992, when its general meaning was "somersault". To add to the confusion, 1935 introduced the name "flip- flop" to the electronic switching circuit.
The English reduplicative word "aye-aye" is a noun, translated as a lemur or Madagascar arm. This animal was discovered by a group of American scientists in 1812. One explorer heard exclamations of surprise and fear (“aiee!-aiee!”) from Malagasy (the tribe that encountered the animal). However, this name also exists in remote villages. Based on this, it is unlikely that it has European roots. Another hypothesis suggests that it comes from "hey-hey", which means "I don't know" in Malag. More precisely, the name could have come from Malagasy, who, when asked by Europeans about the animal, answered “I don’t know”, so as not to pronounce the name of a terrible magical animal.
Another example of reduplication appeared in the 1920s. Boogie-woogie has several meanings: 1) (n.) the name of a dance style or musical style; 2) (humorous slang) to dance in a fast and unrestrained style; move quickly, hurry up; leave or keep moving. The term is used jokingly in North America as a term meaning "let's hang out" (slang) or "let's move on". Unlike the expected "boogying", this word has not found wide acceptance in the English-speaking world. "Boogie-woogie" is a reduplication of "boogie" that appeared in Black English (African American English), possibly from the West African English word "bogi (dance) akin to Hausa buga (to the beat of drums)". The expression "Boogie-Woogie" entered colloquial usage in 1928 when Clarence Pineton Smith recorded Pinetop's Boogie-Woogie. These were fast guitar base chords with piano accompaniment. These rhythms were a direct precursor to the blues. Dancing to such music was fast and unrestrained, which determines the meaning of the word today.