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unctuous

adjective

/ˈʌŋk.tʃu.əs/

Meaning

Excessively flattering or ingratiating; oily in texture.

His unctuous tone made everyone uncomfortable.

oily, ingratiating, obsequious, flattering

sincere, genuine, honest

unctuous tone, unctuous smile, unctuous manner

extremely cold; covered with ice; unfriendly or hostile

Diligent, thorough, and extremely attentive to details.

Not allowing fluid or gas to pass through.

Sufficiently great or important to be worthy of attention; noteworthy.

Involving or causing a complete or dramatic change

attractive, suitable, or flattering to the wearer or situation