Answer:
Destroying is the present continuous tense for destroy.
construct and destruct are antonyms
Constricting is the present continuous tense for construct
Explanation:
A prefix is a forefix, a foresyllable essentially consisting of one or more letters or syllables placed at the beginning of a word to modify its meaning.
The prefix "con-" is often placed in front of certain words to obtain something new, few times informal, other times subcultural words and meanings.
Example of the meaning it can give to words includes something constructed or artificial, something hypothetical or rather fictional, other times it related to the concept of conlangs, conworlds the list goes on.