Betray
Betray verb - To be unfaithful or disloyal to.
Usage example: childhood friends of movie stars often betray them by telling their secrets to the supermarket tabloids
Sell out is a synonym for betray in trust topic. In some cases you can use "Sell out" instead a verb "Betray", when it comes to topics like inform against, be disloyal to, be disloyal. popular alternative
Sell out
Sell out verb - Give information that compromises others.
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Synonyms for Sell out
Mutual synonyms
Both terms in one sentence
- Every other episode he's trying to sell out or betray the Robinsons to the latest Monster of the Week, and yet everyone forgets his betrayal by the end of the episode.
Source: Welcome Back, Traitor - Duncan points out Talleyrand's rampant corruption and his willingness to sell out/betray almost any master he served as well and lists the number of different regimes Talleyrand thrived under.
Source: Podcast / Revolutions - Marjolaine betrayed her disciple and lover under the belief that Leliana would EVENTUALLY betray her, and then tried to sell out her own country to Harwen Raleigh.
Cite this Source
Sell out and Betray. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/betray/sell_out
Betray & Sell out. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/betray/sell_out>.
Sell out or Betray. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/betray/sell_out.
Google Ngram Viewer shows how "betray" and "sell out" have occurred on timeline