on top of
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Related to on top of: on top of the world
on top of (someone or something)
1. In complete control or with complete awareness of someone or something, often due to being diligent, fully informed, and/or up-to-date. A: "How is the new project going?" B: "Right on track! Jen was on top of it while you were on vacation." I don't know how you keep on top of all the different student issues that are brought to your attention. How Janet manages to stay on top of all eight of those kids is really beyond me.
2. In addition to something. On top of losing my favorite present, the pool where I was having my party had to close down for the day. Worst birthday ever!
3. In very close proximity to someone or something. I thought I had a great spot right up front for the concert, but I had so many people right on top of me that I ended up not enjoying it at all. Zoning laws usually prohibit new developments from being built right on top of existing ones.
on top of that
Additionally; furthermore. Your performance has really been slipping over the past few months, and you're no longer meeting our expectations. On top of that, your appearance and attire in the office has been very unprofessional recently.
on top of something
1. Fig. up-to-date on something; knowing about the current state of something. Ask Mary. She's on top of this issue. This issue is constantly changing. She has to pay attention to it to stay on top of things.
2. Fig. in addition to something. Jane told Bill he was dull. On top of that, she said he was unfriendly. On top of being dull, he's unfriendly.
3. Fig. victorious over something; famous or notorious for something. It was a close game, but the home team came out on top. Bill is on top in his field.
on top of
1. In control of, fully informed about, as in The weeds were terrible, but the new gardener was soon on top of them, or Our senator always manages to be on top of the issues.
2. In addition to, following closely on, as in Several other benefits are being offered on top of a better salary, or On top of the flu Jane caught her sister's measles. [c. 1600]
3. Also, on top of one another. Very close to, crowded, as in I didn't see her until she was right on top of us, or In these condominiums people are living right on top of one another. [Mid-1900s]
on top ofInformal
1. In control of.
2. Fully informed about: a senator who is always on top of the issues.
3. In addition to; besides: On top of this, several other benefits are being offered.
4. Following closely on; coming immediately after: Hail came on top of a violent thunderstorm.