'Preperations' is indeed a word significant to all, and the function of samskaras is exactly making one ready to reap the fruits of one's actions, of whatever kind they may be. Without samskaras life in this world would be unthinkable, because pre-perations give meaning to life, and one's
interest in life mostly consists of an uninterrupted series of preperations, which lead from one kind of activity into another. Thus the meaning one
gives to life is defined by his samskaras.
It seems to have been a special intention of Buddha to widen the sphere of usage of the term 'preperations', in order to lead people to disgust
with themselves and thus with the world, all in accordance with the key principle of Sramana culture; bondage, liberation and path are to be searched for only within one's six feet long body, and nowhere else. [S.N.4.98]
In a famous passage, recurring on several places in Pali, [D.N.3,212,S.N.2,82, 3.87 etc.] samskaras are explained as that, which prepares
the prepared..., preparing form into the state of form, feeling into the state of feeling etc. ( with all other aggregates) (註6) Samskaras, represented as potter kneading pots in Tibetan tanka representations, prepare the world in two ways, by causes and conditions and by one's will or effort, both being but two aspects of the same process of preparing.
To summerize, the word samskara is used in Buddhism to refer to all the world, individualized as five aggregates of existence. It is used in
active sense to refer to everything creating, preparing one's existence, and in passive sense to everything prepared, created in it, because
samskaras tempered by previous samskaras constitute the causal relations in the world on all levels of existence.
In the Theravada tradition samskara as aggregate is usually taken to refer to all mental factors [51 cetasikas] except feeling and conceptualization, which form separate aggregates. However this differentiation is only a matter of emphasis, because the late two are also referred to as mind preparations [cittasankharas] in the scriptures. [M. N.1 , 301]
http://www.chibs.edu.tw/ch_html/bcc/an19_115.htm
And what is right speech? Abstaining from lying, from divisive speech, from abusive speech, & from idle chatter: This is called right speech.