Helpful
Helpful adjective - Providing service or assistance.
In vain
In vain adverb - To no avail.
Both terms in one sentence
- In short, she's gone from helpful AI companion to an Omnicidal Maniac, all the change in personality happening offscreen, and making all the Chief's attempts to save her from rampancy in Halo 4 feel in vain.
Cite this Source
In vain and Helpful. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/helpful/in_vain
Helpful & In vain. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/helpful/in_vain>.
In vain or Helpful. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/helpful/in_vain.
Google Ngram Viewer shows how "helpful" and "in vain" have occurred on timeline