Not talkative

This crossword clue is for the definition: Not talkative.
it’s A 13 letters crossword puzzle definition.
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Possible Answers: QUIET.

Last seen on: LA Times Crossword 28 Oct 18, Sunday

Random information on the term “QUIET”:

The discovery of cosmic microwave background radiation constitutes a major development in modern physical cosmology. The cosmic background radiation (CMB) was measured by Andrew McKellar in 1941 at an effective temperature of 2.3 K using CN stellar absorption lines observed by W. S. Adams.[1] Theoretical work around 1950[2] showed that the need for a CMB for consistency with the simplest relativistic universe models. In 1964, US radio astronomers Arno Penzias and Robert Woodrow Wilson rediscovered the CMB, estimating its temperature as 3.5 K, as they experimented with the Holmdel Horn Antenna.[3] The new measurements were accepted as important evidence for a hot early Universe (big bang theory) and as evidence against the rival steady state theory.[4] In 1978, Penzias and Wilson were awarded the Nobel Prize for Physics for their joint measurement.

By the middle of the 20th century, cosmologists had developed two different theories to explain the creation of the universe. Some supported the steady-state theory, which states that the universe has always existed and will continue to survive without noticeable change. Others believed in the Big Bang theory, which states that the universe was created in a massive explosion-like event billions of years ago (later determined to be approximately 13.8 billion years).

QUIET on Wikipedia