| circuit | N. the regular journey around a territory by a person performing duties / OBCHÓD |
| circuitous | ADJ. roundabout, winding / OKRĘŻNY |
| circumference | N. the outer boundary line around a circular area / OBWÓD |
| circumlocution | N. a roundabout way of saying something / OGLĘDNA WYPOWIEDŹ |
| circumnavigate | V. to sail around / OPŁYWAĆ DOOKOŁA |
| circumscribe | V. to limit, to confine / OKREŚLAĆ, DEFINIOWAĆ |
| circumspect | ADJ. cautious, careful to consider possible consequences / OSTROŻNY, POWŚCIĄGLIWY |
| circumstance | N. a fact or event accompanying another fact or event / FAKT, OKOLICZNOŚĆ |
| circumvent | V. to get around or to overcome by artful maneuvering, to prevent / OMINĄĆ, OBEJŚĆ, PRZECHYTRZY |
| credence | N. belief, acceptance as true / WIARA |
| credentials | N. document that cause others to believe in one / REFERENCJE, KWALIFIKACJE, DOKUMENT TOŻSAMOŚCI |
| credibility | N. trustworthiness / WIARYGODNOŚĆ |
| credible | ADJ. believable / WIARYGODNY |
| credit | N. trust; as financial credit; a source of honor; as a credit to one's family / KREDYT, UZNANIE |
| credulity | N. tendency to believe readily on too little evidence / ŁATWOWIERNOŚĆ |
| credulous | ADJ. gullible / ŁATWOWIERNY |
| creed | N. a formal statement of religious or other belief / WYZNANIE WIARY |
| discredit | V. to distrust, to destroy belief in / DYSKREDYTOWAĆ, KOMPROMITOWAĆ |
| incredible | ADJ. unbelievable / NIESAMOWITE |
| incredulity | N. tendency not to believe readily, skepticism / NIEDOWIERZANIE |
| incredulous | ADJ. not believing readily, disbelieving / NIEDOWIERZAJĄCY, SCEPTYCZNY, NIEUFNY |
| miscreant | N. evildoer or criminal / NIKCZEMNIK, ŁOTR |
| coherent | ADJ. having an orderly relation of parts / LOGICZNY, SPÓJNY |
| collaborate | V. to labor together / WSPÓŁPRACOWAĆ |
| collusion | N. a secret agreement between two or more persons for a deceitful purpose / ZMOWA |
| commensurate | ADJ. equal in measure or size, proportionate / PROPORCJONALNY, WSPÓŁMIERNY |
| commiserate | V. to sympathize / WSPÓŁCZUĆ |
| commotion | N. people moving together; social disorder / ZAMIESZKI, ROZRUCHY; ZGIEŁK |
| complicate | V. to make intricate or involved / KOMPLIKOWAĆ |
| composition | N. a putting together of parts to form a whole / SKŁAD, KOMPOZYCJA |
| compunction | N. an uneasiness caused by a sense of guilt, a slight regret / SKRUPUŁY, WYRZUTY SUMIENIA |
| condone | V. to forgive or overlook / WYBACZAĆ LUB ZGODZIĆ SIĘ NA COŚ |
| congenital | ADJ. born together, existing at birth / WRODZONY |
| consensus | N. a feeling together; general agreement / JEDNOMYŚLNOŚĆ, ZGODNA OPINIA |
| consummate | ADJ. complete or perfect in every respect / WYTRAWNY, DOSKONAŁY |
| contemporary | ADJ. belonging to the same age / ÓWCZESNY, WSPÓŁCZESNY |
| convene | V. to come together formally / ZWOŁAĆ (np. kongres, spotkanie), ZEEBRAĆ SIĘ |
| convivial | ADJ. fond of eating, drinking, and being sociable together / TOWARZYSKI, WESOŁY, PRZYJEMNY |
| correlate | V. to relate together, to show relationship / KORELOWAĆ, ZESTAWIAĆ |
