Depending upon the context, the word is either a Gerund or a Participle. (However, only some Participles end in -ing. Some end in -ed.)
It could be malingering.
The word "budding" describes a bush that is producing new growth or buds.
You double the consonant before adding "ing" to a word that has a short vowel sound and ends with a single consonant if the consonant is preceded by a single vowel. This helps to keep the pronunciation of the word consistent.
"Running" is a verb that ends in -ing and can also function as a noun, such as in the sentence "Running is good exercise."
When a word ends in a silent "e," the "e" is usually dropped before adding "ing." For example, "bake" becomes "baking" and "hope" becomes "hoping." However, there are some exceptions where the "e" is retained, such as in "being" and "seeing."
Ingurgitating means overeat or eat immodestly; is a word that starts and ends with ing.
Duckling.
not BEING dumb
meowing and annoying
Cussing
"Sucking."
It could be malingering.
writing
Matching
x-raying
The word "budding" describes a bush that is producing new growth or buds.
nothing unless you want a word that ends with an -ing sound