reneger
One who welches
A reneger is someone who reneges—who goes back on a promise, commitment, or agreement.
The word carries a tone of accusation: The senator called the president a reneger on his campaign promises.
Less common than the verb form, it appears when someone wants to label a person by their broken word.
One who betrays allegiance
- backstabberDisloyal pretend ally
- double-crosserOne who deceives confederates
- turncoatOne who betrays allegiance
- defectorOne who abandons allegiance
Judas · betrayer · sellout · oath-breaker · deserter · apostate · recreant · two-timer
Not deserving of confidence
- unreliableNot consistently performing
- dishonestInclined to deceive
- deceitfulInclined to mislead others
- undependableNot consistently trustworthy
dishonorable · faithless · false · shifty · shady · slippery · fickle · flaky
Reversing to find alternatives
- breakingComing apart suddenly
- defaultingFailing to repay debt
- withdrawingRemoving or pulling away
- reversingGoing in opposite direction
flip-flopping · welshing · retracting · recanting · disavowing · repudiating · rescinding · revoking
traitor
One who betrays allegiance
- backstabberDisloyal pretend ally
- double-crosserOne who deceives confederates
- turncoatOne who betrays allegiance
defector · Judas · betrayer · sellout · oath-breaker · deserter · apostate · recreant · two-timer · snake
untrustworthy
Not deserving of confidence
- unreliableNot consistently performing
- dishonestInclined to deceive
- deceitfulInclined to mislead others
undependable · dishonorable · faithless · false · shifty · shady · slippery · fickle · flaky · inconsistent
backtracking
Reversing to find alternatives
- breakingComing apart suddenly
- defaultingFailing to repay debt
- withdrawingRemoving or pulling away
reversing · flip-flopping · welshing · retracting · recanting · disavowing · repudiating · rescinding · revoking · abandoning