Yes, the opposite of de- is ad-. This is not exactly true for the word detach however. The opposite for this word is at- to make attach.
The opposite of detach using the prefix ad would be "attach", meaning to connect or fasten something to something else.
The prefix of "admit" is "ad-".
A prefix for administration is "ad-" or "admin-".
Ad means in the direction of in medical terms.
The prefix for adventure is "ad-" which means "to" or "towards".
The prefix for the word "affirm" is "af-" or "ad-".
The opposite of ad infinitum would be concise.
to or towards
to or towards
You could add the prefix ad- to it to make the word advantage.
adaptation prefix preadaptation
denoting motion or direction to
"In" is the root in the word "admit." It means to allow someone to enter or to confess to a wrongdoing. "Ad" is a prefix that means to move towards or bring forth.
The prefix in the word appease is ap-, a variation of ad- meaning "to."
To, Towards is the English equivalent of the Latin prefix 'ad-'. An example of its use may be found in the infinitive 'adiungere', which means 'to join to'. The infinitive is formed from the joining of the prefix 'ad-' to the infinitive 'iungere', which means 'to connect, join, unite'.
The prefix of the word "acknowledge" is "ack-"
In years it is: ad
The prefix for 'monition' is usually 'ad' . . . admonition.