ac- = to

       (1) accede

            assonance：seed

            meaning：to agree to a request

            ecample：will you accede to her request ?

         (2)accelerate

             assonance：celebrate

             meaning：speed up

             ecample：the car accelerated to overtake me.

(3)acclimate

 assonance：climate

 meaning：adapt

 ecample：helping freshmen to acclimate to college life.

(4)accost

    assonance：cost

    meaning：to go up to somebody and speak to them

    ecample：a stranger accosted him on the bus.

          (5)accumulate

               assonance：cute

  meaning：collect

      ecample：i seem to have accumulated a lot of books.