First class
First class noun - Mail that includes letters and postcards and packages sealed against inspection.
Subtle and first class are semantically related. in excellent topic. In some cases you can use "Subtle" instead an adjective phrase "First class".
Subtle
Subtle adjective - Clever at attaining one's ends by indirect and often deceptive means.
First class and subtle are semantically related. Sometimes you can replace phrase "First class" with "Subtle", this terms are similar.
Both terms in one sentence
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In X-Men: First Class, it's subtle, but every time they're in a bar, Charles orders a cola, rather than alcohol, for Mystique, because he doesn't want her "slipping up" and exposing her true form.
Source: Drink Order -
Ironic Echo: "The truth is you'll never be a first class human being until you've learned to have some regard for human frailty." Jacob and Esau: It's subtle, but Dinah seems more like her mother, while Tracy clearly takes after her father.
Source: Film / The Philadelphia Story
Cite this Source
Subtle and First class. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/first_class/subtle
First class & Subtle. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/first_class/subtle>.
Subtle or First class. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/first_class/subtle.
Google Ngram Viewer shows how "first class" and "subtle" have occurred on timeline