something

noun

1. An object whose nature is yet to be defined.

2. An object whose name is forgotten by, unknown or unimportant to the user, e.g., from words of a song. Also used to refer to an object earlier indefinitely referred to as 'something' (pronoun sense).

verb

1. Applied to an action whose name is forgotten by, unknown or unimportant to the user, e.g. from words of a song.

adjective

1. Having a characteristic that the speaker cannot specify.

adverb

1. (degree) Somewhat; to a degree.

   “The baby looks something like his father.”

2. (degree) To a high degree.

pronoun

1. An uncertain or unspecified thing; one thing.

   “I have a feeling something good is going to happen today.”

2. (of someone or something) A quality to a moderate degree.

   “That child is something of a genius.”

3. (of a person) A talent or quality that is difficult to specify.

   “She has a certain something.”

4. (often with really or quite) Somebody who or something that is superlative or notable in some way.

   “- Some marmosets are less than six inches tall. - Well, isn't that something?”