/ dɪˈsɪmjuleɪt; NAmE / verb
[ vn , v ] ( formal ) to hide your real feelings or intentions, often by pretending to have different ones
SYN dissemble
► dis·simu·la·tion / dɪˌsɪmjuˈleɪʃn; NAmE / noun [ U ]
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WORD ORIGIN
late Middle English : from Latin dissimulat- hidden, concealed, from the verb dissimulare .