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"Very pleased" or contented to a fault with oneself or one's actions

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complacent

Front

characterized by extreme care and great effort, 
with a sense of right or wrong

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conscientious

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expressing extreme contempt or lack of respect

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contemptuous

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make believe with the intent to deceive

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feign

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impossible or difficult to perceive by the mind or senses

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imperceptible

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a slight or indirect suggestion or vague understanding

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intimation

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(v.) express criticism towards
(n.) disgrace or shame

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reproach

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easily irritated or annoyed / 
stubbornly resistant to authority or control

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fractious

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having or showing arrogant superiority to and disdain of those one views as unworthy

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supercilious

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does not attract much attention

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unobtrusive