HackerVoca

: bias, partiality
preliminary : introductory, preparatory / adjective

1 [only before noun] done in order to get ready for something: preparatory talks to clear the way for a peace settlement

2 preparatory to formal before something else and in order to prepare for it: The partners held several meetings preparatory to signing the agreement.

premium : bonus, gift, reward
preoccupied / adjective
thinking about something a lot, with the result that you do not pay attention to other things: I tried to speak to Bella, but she seemed a little preoccupied.
[+ with]: Rod's completely preoccupied with all the wedding preparations at the moment.