Polish-English translations for zaklinać się

assert
us
He would often assert that there was life on other planets.to assert ones authoritySalman Rushdie has asserted his right to be identified as the author of this work.
assure
us
I assure you that the program will work smoothly when we demonstrate it to the client.He assured of his commitment to her happiness.

guarantee
us
Can you give me a guarantee that he will be fit for the match?The cooker comes with a five-year guarantee.The long sunny days guarantee a good crop.
swear
us