adj
placid
PLA-sihd
adj
1
Calm, peaceful, and not easily disturbed.
"The lake was placid at dawn, without a single ripple."
"He remained placid even as everyone else panicked."
How to Use Placid
Learner’s notesIn plain EnglishCalm and untroubled — used for both people's temperaments and still bodies of water.
Easily confused with
Common pairings
placid lake
placid temperament
remain placid
Word Forms
placider comparative, placidest superlative
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Etymology
From French placide, from Latin placidus, "calm, peaceful," related to placere, "to please."