From Wiktionary, the free dictionary
From true -ism
truism (plural truisms
A self-evident or obvious truth .
Synonyms: lapalissade platitude 2018 November 13, Kate Julian, “Why Are Young People Having So Little Sex?”, in The Atlantic [1] The phrase If something exists, there is porn of it used to be a clever internet meme; now it’s a truism .
A banality or cliché .
Synonyms: platitude see also Thesaurus:saying 1837 L[etitia] E[lizabeth] L[andon ], “The Remembrance of the Dead”, in Ethel Churchill: Or, The Two Brides. [ … ] , volume II, London: Henry Colburn , [ … ] →OCLC page 321 :After a little decent sorrow had been put forth for the late "severe affliction," joined with some weariful truisms about resignation to the will of Providence, the rest of the epistle was filled up with reproofs about her ladyship's extraordinary and improper conduct in setting off without his consent!
self-evident or obvious truth
Bulgarian: всеизвестен факт ( vseizvesten fakt )
Catalan: obvietat f ( less common, unauthorized ) truisme m
Chinese:
Mandarin: 陳詞濫調 ／ 陈词滥调 (zh) ( chéncílàndiào )
Czech: samozřejmost f truismus m
Dutch: gemeenplaats (nl) f
Esperanto: evidentaĵo
Finnish: itsestäänselvyys (fi) , selviö (fi)
French: lapalissade (fr) f truisme (fr) m
German: Binsenwahrheit (de) f Binsenweisheit (de) f Gemeinplatz (de) m Truismus (de) m Binse (de) f Allgemeinplatz (de) m
Greek: κοινοτυπία (el) f ( koinotypía )
Hungarian: közhely (hu)
Italian: ovvietà (it) f tautologia (it) f
Japanese: 自明の理 ( じめいのり, jimei no ri )
Norwegian: truisme m banal , forslitt , selvinnlysende ) sannhet (no) c
Polish: truizm (pl) m
Portuguese: truísmo (pt) m
Romanian: truism (ro) n
Russian: труи́зм (ru) m ( truízm ) , трюи́зм (ru) m ( trjuízm ) , прописна́я и́стина (ru) f ( propisnája ístina ) , ляпалиссиа́да (ru) f ( ljapalissiáda )
Serbo-Croatian: truizam (sh)
Spanish: obviedad (es) f ( colloq. ) perogrullada (es) f ( less common ) truismo (es) m
Turkish: apaçık gerçek
Welsh: gwireb f
banality or cliché
Bulgarian: баналност (bg) f ( banalnost )
Catalan: banalitat f lloc comú m tòpic (ca) m clixé m
Czech: banalita (cs) f klišé (cs) n otřepaná pravda f
Finnish: latteus (fi) , klisee (fi)
German: Banalität (de) f Klischee (de) n Floskel (de) f Plattitüde (de) f Gemeinplatz (de) m Allgemeinplatz (de) m
Greek: κοινοτυπία (el) f ( koinotypía )
Italian: banalità (it) f clichè m luogo comune (it) m tautologia (it) f
Romanian: banalitate (ro) f
Russian: бана́льность (ru) f ( banálʹnostʹ ) , клише́ (ru) n ( klišé )
Serbo-Croatian: truizam (sh) m
Spanish: banalidad (es) f lugar común (es) m tópico (es) m cliché (es) m
Turkish: banal ya da klişe
Borrowed from French truisme
truism n plural truisme
truism 
