to make something happen faster or sooner:
Their departure was hastened by an abnormally cold winter.
to do or say something quickly or without delay [= hurry]
hasten to do something
I hastened to assure her that there was no danger.
used when you realize that what you have said may not have been understood correctly:
an exhausting course, which, I hasten to add, was also great fun
4 [intransitive always + adverb/preposition] literary
to go somewhere quickly