Ly (remove the "e" first) to create "truly"
The true opposite of prefix is no prefix.But, as a prefix means something added at the start of a word. the generally understood opposite is suffix - which is something added to the end of a word.
The prefix that can be added to "please" is "dis-" to form "displease".
The prefix that can be added to the word "destructive" is "non-."
Impolite, unpolite
The prefix that can be added to appointment is "re-", forming the word "reappointment."
The true prefix of the word attract is at.
The prefix that can be added to "imperceptibly" is "un-".
The prefix added to "payment" to make it opposite is "non-."
Pre- is a prefix that can be added to the word monition.
The prefix In- can be added to numerable.
The prefix "non-" must be added to form the word "non-poisonous."
A prefix is the part that comes before (pre means before). The prefix is un. It comes before the word true. Un means not. Untrue means not true. The prefix is very imortant to the meaning of this word.