The spelling of "doubled" can be a bit tricky due to the presence of a silent "b." In IPA phonetic transcription, the word is written as "dʌbld." This means that the "b" is not pronounced, but it influences the sound of the preceding "l" by making it a velarized "l" (made by raising the back of the tongue and creating a little constriction in the throat). So, when saying "doubled," remember to spell it with a "b," but don't actually pronounce the "b."
Doubled is the past tense and past participle form of the verb "double." It is used to describe an action of multiplying or increasing something by two or a similar extent. Doubled can refer to the act of doubling a number, value, quantity, or amount, resulting in it becoming twice as much as before.
In mathematical terms, when a number is doubled, it is multiplied by two. For example, if you have four apples and you double the amount, you would have eight apples. Similarly, doubling a measurement means multiplying it by two, resulting in it becoming twice the size as it was before.
Beyond numerical contexts, "doubled" can also be used to describe actions or emotions that have intensified or grown stronger. For instance, if someone's efforts to achieve their goals doubled, it implies that they have put twice the amount of effort or dedication into pursuing their objectives.
Additionally, "doubled" can be used figuratively to convey the idea of duplicating or repeating an action or occurrence. For example, if a person says they are seeing double, it means that they perceive two identical images of a single object or person, possibly due to visual impairment or fatigue.
Overall, doubled is a term commonly employed to describe the act of multiplying by two, increasing or intensifying something, or experiencing the perception of two identical images.
The word "doubled" is derived from the Middle English word "doublen", which can be traced back to the Old French word "doubler". "Doubler" was formed through a combination of the Latin prefix "dis-" meaning "twice" or "double", and the Latin word "duplus" meaning "twofold" or "double". "Duplus" itself is a compound of the Latin word "duo" meaning "two" and the suffix "-plus" indicating "more". This evolution in meaning ultimately gave rise to the English word "doubled" as we know it today, referring to something that has been multiplied by two or increased in quantity or intensity.