Friendly and Serious

Opposite meaning words

Friendly adjective - Having or showing kindly feeling and sincere interest.

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Serious is an antonym for friendly.

Nearby Words: friend, friendliness, friendship

Serious adjective - Not joking or playful in mood or manner.

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Friendly is an antonym for serious in crucial topic.

Nearby Words: seriously, seriousness

Even when they're trying to murder each other it comes off more like friendly ribbing than a serious situation.

Source: Friendly Enemy
It's not clear if he's being serious, and their "Never Heard That One Before" is friendly enough that it's not clear if they're being serious either.

Source: Never Heard That One Before
Paintball is such serious business to the students that both times the college tries to have a friendly game it ends up causing thousands of dollars in property damage.

Source: Serious Business / Live-Action TV

Cite this Source

Serious and Friendly. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/friendly/serious

Friendly & Serious. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/friendly/serious>.

Serious or Friendly. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/friendly/serious.

Google Ngram Viewer shows how "friendly" and "serious" have occurred on timeline