The phrase "implied threat" means when someone suggests or hints that they might harm you or do something bad, without directly saying it. Full definition
You recently gave a talk on «surviving» in the age of automation, which implies a threat. (canadianbusiness.com)
The kind of influence that Jesus wielded was not based on implied threats or favors with strings attached; it was grounded in grace freely given — grace not earned by actions grown empty and devoid of meaning. (religion-online.org)
• He said Cameron should seek a renegotiation without promising a referendum now because a referendum implied a threat to withdraw. (theguardian.com)