She maintained a false pretense of happiness throughout the party.
masked emotions
Frequency:
60
%
Behind her smile, she masked emotions of sadness and despair.
deceptive appearance
Frequency:
50
%
His deceptive appearance hid his true intentions.
feigned innocence
Frequency:
45
%
His feigned innocence fooled no one in the courtroom.
Idiomatic Expressions for dissimulation
Phrase: cloak of dissimulation
Meaning: a deceptive covering or disguise used to conceal one's true thoughts or feelings
Usage: He used a cloak of dissimulation to hide his true intentions from his colleagues.