placid
UK[ˈplæsɪd]US[ˈplæsɪd]
adj
Not easily upset or excited; calm and peaceful.
Morpheme Breakdown
plac
id
plac
please, soothe
id
adjective suffix
Etymology
The word 'placid' originates from the Latin placidus, meaning 'gentle, calm, quiet,' which itself derives from the verb placēre, 'to please or soothe.' This Latin root is part of a wider Indo-European family, related to words implying agreement and pleasure, such as the Greek plak- (to be gentle) and the English 'please.' The semantic journey moved from the active sense of 'soothing or appeasing others' to the passive state of 'being soothed,' thus describing a calm and undisturbed temperament. The suffix '-id' was a common Latin formative for creating adjectives denoting a characteristic, solidifying the meaning into 'having a pleasingly calm quality.'
Analysis
Structure: plac (please, soothe) + id (adjective suffix)
plac (from Latin placēre, meaning 'to please, soothe, appease') + id (a Latin adjectival suffix meaning 'having the quality of').
Examples
The lake was placid under the morning sun.
She has a remarkably placid disposition, even under pressure.
The placid expression on his face concealed his inner turmoil.