Not just a misnomer, but anti-scriptural and anti-Christ as a previous post proved.
Here is the essence of it: https://www.jehovahs-witness.com/topic/4885250786197504/what-org-teaches-8-jehovahs-witnesses-our-scriptural-name
Isaiah 62:2 - "... be called by a new name, which the very mouth of Jehovah will designate."
Acts 11:26 - "the disciples were by divine providence called Christians."
Matthew 10:18 - ".....for my sake, for a witness to them and the nations.
Mark 13:9 - "......before governors and kings for my sake, for a witness to them."
Luke 24: 47,48 - "....and on the basis of his [Jesus'] name....You are to be witnesses....."
John 1:15 - "John bore witness about him..." [JESUS]
John 5:37 - "the Father who sent me has himself borne witness about me."
John 8:18 - "the Father who sent me bears witness about me."
John 15:26,27 - "the spirit will bear witness about me; and YOU in turn, are to bear witness."
Acts 1:8 - "You [11 faithful apostles] will be witnesses of me...."
Acts 4:17,18 - ...upon the basis of this (Jesus') name .... upon the basis of the name of Jesus.
Acts 10:39 - "And we are witnesses of all the things he [Jesus] did..."
Acts 10:43 - "To him [Jesus] all the prophets bear witness....."
Acts 13:31 - "who are now his (Jesus') witnesses to the people.
Acts 22:15 - "because you are to be a witness for him [Jesus] to all men......"
Acts 22:20 - "......the blood of Stephen your [Jesus'] witness was being spilled..."
Acts 23:11 - "..... a thorough witness on the things about me in Jerusalem..."
Acts 26:16 - "I [Jesus]..choose you as an attendant and a witness.. respecting me"
Romans 8:16 - "The spirit itself bears witness with our spirit..."
1 Corinthians 1:6 - "even as the witness about the Christ..........."
1 Timothy. 2:6 - "......what is to be witnessed to at its own particular times."
2 Timothy 1:8 - "............of the witness about our Lord.. [Christ]"
1 John 5:9 - "the witness God gives...the fact that he has borne witness concerning his Son."
Revelation 1:9 - "....for speaking about God and bearing witness to Jesus."
Revelation 12:17 - ".......and have the work of bearing witness to Jesus."
Revelation 17:6 - "........and with the blood of the witnesses of Jesus."
Revelation 19:10 - ".....the work of witnessing to Jesus.... bearing witness to Jesus."
Revelation 20:4 - "............ for the witness they bore to Jesus."
Ask any J.W. to counter all of these scriptures with just one verse which says Christians must witness for "Jehovah."
The embarrassing silence, followed by a feeble non-scriptural "explanation" will say it all.