1. To continue to be atop or aboard (something). The plane landed and arrived at the gate, but the captain instructed everyone to remain on until they were given the signal to leave. I would like for this picture to remain on the mantelpiece, if you don't mind. It's very precious to me.
2. To continue to be present at some place. I think I'll remain on for a while and make sure that Tommy settles in all right with the other kids. They said I could remain on with the company as a consultant.
3. To continue to serve as a member of some group or body. Despite widespread calls for his resignation, Smith vowed to remain on the city council for as long as he was legally able. I'm not longer receiving a salary from the company, but they asked me to remain on the board of directors.
4. To continue regularly and continuously taking a certain medication. My doctor wants me to remain on blood thinners until my cholesterol is lowered enough. You'll likely remain on antipsychotic medication for the rest of your life.
5. To continue having some current, active status. We'll have to remain on our guard while we're in this part of the city. Mike and I broke up several months ago, but we've remained on good terms.
1. to continue to stay in one place. (The on is an adverb, not a preposition.) Everyone else left, but I decided to remain on there. I remained on for a while during the time they were training my replacement.
2. and remain on something to continue to be on something; to continue to serve on a body. Will you remain on the board of directors for another year? I will remain on this committee as long as I am needed.
3. to continue to take a particular medicine. How long should I stay on these pills? I want you to remain on this medication until you run out.
(one's) guard (against someone or something) Go to on (one's) guard (against someone or something).