Trashing cards is briefly mentioned under "Key Words" but there is no further explanation under the phases of the turn. So, could someone clarify if a player can trash any cards they want from the remaining cards in their hand after forming a word?
If memory serves, I think when the use of a card in a word allows you to "trash a card", it's always to "trash a card from hand", i.e. a card that you drew for this turn but that you did NOT use in the word you made. And it's always optional.
Also, as I understood the designer elsewhere, he thinks it would be best to take "trashed" cards and just put them on the bottom of their respective stacks so that they can potentially be purchased again (e.g. a trashed 2 cent card would be placed under the 2 cent card pile of the Offer).