1
general::
Phrase(s): 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.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
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]
American Heritage Idioms