Meaning & use
SOS
An international distress signal, or more generally, an urgent request for help.
See it in a sentence
The sinking ship's crew radioed an SOS before abandoning the vessel.
After the flood cut off the village, the mayor sent out an SOS for supplies.
A note on using this word
SOS is not an acronym for specific words; it was chosen in Morse code (three dots, three dashes, three dots) because it is easy to transmit and recognize.
Words with a similar meaning
distress callcry for help
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Make it your own
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