Alternative
Alternative noun - The power, right, or opportunity to choose.
Usage example: there's no alternative: we must cross the stream to reach our destination
Duty is an antonym for alternative.
Duty
Duty noun - Something one must do because of prior agreement.
Usage example: I must obey the call of duty and serve my country
Alternative is an antonym for duty.
How words are described
Both words in one sentence
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It hasn't been unheard of for attendance to be optional, but for all non-attendees to be required to perform some particularly unpleasant or monotonous duty as an alternative.
Source: Got Volunteered -
It also shows up in the multiplayer of Call of Duty 2 as a slower-firing but higher-capacity alternative to the Thompson.
Source: Cool Guns / Submachine Guns - Kurt Cobain listened to many alternative rock bands before Nirvana became famous and made it his duty to give these groups a shout-out now and then, so that they got more attention from the mainstream.
Source: One Of Us / Musical Freaks
Cite this Source
Duty and Alternative. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/alternative/duty
Alternative & Duty. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/alternative/duty>.
Duty or Alternative. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/alternative/duty.
Google Ngram Viewer shows how "alternative" and "duty" have occurred on timeline