"mucking" in the verb sense
1. muck
remove muck, clear away muck, as in a mine
2. manure, muck
spread manure, as for fertilization
3. mire, muck, mud, muck up
soil with mud, muck, or mire
"The child mucked up his shirt while playing ball in the garden"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License