lull someone into something phrasal verb with lull verb [ T ] uk / lʌl / us / lʌl / Add to word list to make someone feel safe in order to trick them: Most exercise classes start gently, lulling you into thinking that you're in good shape. Their promises lulled us into a false sense of security (= made us feel safe, when in fact we were not).

phrasal verb lull somebody into something to make somebody feel confident and relaxed, especially so that they do not expect it when somebody does something bad or dishonest His friendly manner lulled her into a false sense of security (= made her feel safe with him when she should not have).

lull into lull (one) into (something) To cause one to fail to be aware of the risks, dangers, or true reality of a situation. Installing cameras at home lulled me into a false sense of security—our house still ended up getting robbed.