Greek: υποκρισις [hupokrisis] (Noun feminine). Dissimulation, hypocrisy.

υποκρισις [hupokrisis] appears 6 times* in the NT:

(1) Matthew 23: 28
Even so ye also outwardly appear righteous unto men, but within ye are full of hypocrisy and iniquity. - υποκρισεως [hupokriseôs] Gen. sing.

(2) Mark 12: 15
Shall we give, or shall we not give? But he, knowing their hypocrisy, said unto them, Why tempt ye me? bring me a penny, that I may see it. - την υποκρισιν [tên hupokrisin] Acus. sing.

(3) Lucke 12: 1
In the mean time, when there were gathered together an innumerable multitude of people, insomuch that they trode one upon another, he began to say unto his disciples first of all, Beware ye of the leaven of the Pharisees, which is hypocrisy. - υποκρισις [hupokrisis] Nom. sing.

(4) Galatians 2: 13
And the other Jews dissembled likewise with him; insomuch that Barnabas also was carried away with their dissimulation. - τη υποκρισει [tê hupokrisei] Dat. sing.

(5) 1 Timothy 4: 2
Speaking lies in hypocrisy; having their conscience seared with a hot iron. - υποκρισει [hupokrisei] Dat. sing.

(6) 1 Peter 2: 1
Wherefore laying aside all malice, and all guile, and hypocrisies, and envies, and all evil speakings. - υποκρισεις [hupokriseis] Acus. pl. /Variant: υποκρισιν [hupokrisin] Acus. sing.
* + variant:
James 5: 12:
But above all things, my brethren, swear not, neither by heaven, neither by the earth, neither by any other oath: but let your yea be yea; and your nay, nay; lest ye fall into condemnation. - ινα μη υπο κρισιν πεσητε [hina mê hupo krisin pesête] or - ινα μη εις υποκρισιν πεσητε [hina mê eis hupokrisin pesête] "so that you don`t fall into hypocrisy" (World English Bible).