conscientious

From Middle French conscientieux, from Medieval Latin cōnscientiōsus. Its English equivalent could possibly be analyzed as conscient +‎ -ous. See more at conscience.

conscientious (comparative more conscientious, superlative most conscientious)

Thorough, careful, or vigilant in one’s task performance; painstaking.
He was a thoughtful and conscientious worker.
Influenced by conscience; principled; governed by a strict regard to the dictates of conscience, or by the known or supposed rules of right and wrong (said of a person).
Synonym: faithful

The advice of wise and conscientious people.

thorough, careful, or vigilant — see also aware

Bulgarian: добросъвестен (bg) (dobrosǎvesten), съвестен (bg) (sǎvesten)
Chinese:
Mandarin: 认真的, 投入的
Czech: svědomitý
Danish: samvittighedsfuld, pligtopfyldende
Dutch: consciëntieus (nl), nauwgezet (nl), plichtsbewust (nl), zorgvuldig (nl)
Esperanto: konscienca
Finnish: tunnollinen (fi), tunnontarkka
French: consciencieux (fr)
German: gewissenhaft (de)
Greek: ευσυνείδητος (el) (efsyneíditos)
Ancient: εὐσυνείδητος (eusuneídētos)
Hungarian: lelkiismeretes (hu)
Icelandic: samviskusamur
Italian: coscienzioso (it)
Latin: pius (la)
Latvian: apzinīgi
Maori: urupū
Norwegian:
Bokmål: samvittighetsfull

Nynorsk: samvitsfull
Persian: باوجدان (fa) (bâvojdân), وظیفه‌شناس (vazife-šenâs)
Polish: skrupulatny (pl), sumienny (pl)
Portuguese: consciencioso (pt)
Romanian: conștiincios (ro)
Russian: добросо́вестный (ru) (dobrosóvestnyj), созна́тельный (ru) (soznátelʹnyj), че́стный (ru) (čéstnyj)
Serbo-Croatian:
Cyrillic: (Ekavian) са́вестан, (Ijekavian) са́вјестан

Roman: (Ekavian) sávestan (sh), (Ijekavian) sávjestan (sh)
Sicilian: cuscinziusu
Spanish: concienzudo (es)
Swedish: samvetsgrann (sv), plikttrogen (sv)
Ukrainian: сумлі́нний (sumlínnyj), добросо́вісний (dobrosóvisnyj)

influenced by conscience

English