The connotation of humbug is typically negative, suggesting deceit or dishonesty. It implies something that is insincere, pretentious, or intended to deceive others.
That behavior is often described as manipulative or deceitful. Such a person may be considered two-faced or insincere in their interactions.
Not all men are scared of women. Fear of women or any group is based on individual beliefs, experiences, and perceptions. It is important to recognize that generalizations can be harmful and that everyone should be treated as individuals.
Sense of humor is not determined by gender but rather varies among individuals regardless of sex. Cultural stereotypes may suggest men have a better sense of humor, but humor preferences and ability are unique to each person.
Someone who is affectedly modest or shy may come across as insincere or overly self-deprecating in order to seek attention or portray humility in an exaggerated way. They might downplay their achievements or seek validation through their perceived lack of confidence.
An insincere person should not be trusted
Your countenance belies your insincere request.
An insincere apology is no better than no apology. I noticed that she was insincere when she said the shirt that was too small for me looked good.
The word 'glib' means fluent but insincere.
He made a show of caring and wanting to help, but we knew he was insincere.
lacking sincerity; "a charming but thoroughly insincere woman"; "their praise was extravagant and insincere
yes
No.
Hypocritical.
sincerely
It can depending on the person and it also depends if you are the one being unfaithful/ insincere or if your spouse is.
Sometimes yes. When somebody wants to flatter someone for something in return, or for putting them in a good mood, they will be insincere. But you never know, they might be sincere or not. But if someone is just commenting to flatter you because it's true, such as really close friends, then no it isn't insincere.