tranquilo
calm
adjective trrahn-KEE-loh Less Common
Origin: From Latin tranquillus.
Also means
quiet
Usage Note
Tranquilo is used with estar (not ser) to describe a temporary state of calm: está muy tranquilo hoy. With ser it describes an inherently calm-natured person or a peaceful place: es un pueblo tranquilo. The imperative ¡Tranquilo! or ¡Tranquila! is a very common reassurance: 'Don't worry!' / 'Calm down!' The adverb is tranquilamente and the noun tranquilidad.
Examples
"Mantente tranquilo en situaciones difíciles."
Natural Translation
Stay calm in difficult situations.

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