Learn Finnish: Yritän nopeuttaa työtä, mutta lykkään kokouksen loppuviikoksi. - I am trying to speed up the work, but I will postpone the meeting to the end of the week.

The translative ending -ksi is used here to indicate a deadline or the targeted time for an event. By adding it to loppuviikko (end of the week), you express that the meeting is postponed until that specific new time.

Why is the first object työtä (partitive) but the second object kokouksen (accusative)?

This highlights the difference between ongoing and completed actions! You use the partitive työtä because speeding up the work is an ongoing process. You use the accusative kokouksen because postponing the meeting is viewed as a single, completed action.

What is the dictionary form of lykkään, and why does it have a double 'k' here?

The dictionary form is lykätä (to postpone). It belongs to verb type 4, which undergoes reverse consonant gradation. This means the weak single 'k' in the infinitive strengthens into a double 'kk' when conjugated into forms like lykkään (I postpone).

How is the verb nopeuttaa built from other words we might know?

It is derived from the common adjective nopea (fast). In Finnish, adding the ending -uttaa or -yttää to an adjective often creates a verb that means to make something become that adjective. Therefore, nopeuttaa literally means to make fast, or to speed up.