SINGULARLY (adverb) definition and synonyms | Macmillan Dictionary.
What type of word is singular?
Singular is a grammar term that is defined as the form of a word used when discussing only one person. "He" is an example of a singular pronoun. Being only one; individual; lone.
Is leaving an adverb?
We do not currently know of any adverbs for leave. Using available adjectives, one could potentially construct nonstandard adverbs such as leavelessly, leavingly or leftly.