det

• The (thing) here (used in indicating something or someone nearby).
  "Hey, you know what's got two thumbs and really likes brownies? This guy!"
• (informal) A known (thing) (used in first mentioning a person or thing that the speaker does not think is known to the audience). Compare with "a certain ...".
  "I met this woman the other day who's allergic to wheat. I didn't even know that was possible!"
• (of a time reference) Designates the current or next instance.
  "It's cold this morning."

noun

• (philosophy) Something being indicated that is here; one of these.
  "Terms like 'house', 'sphere', 'animal', and 'human' do not refer to other thises distinct from these ones here — they refer to the sort of thing these ones here are."

intj

• (Internet slang) Indicates the speaker's strong approval or agreement with the previous material.
  "― I wish trolls could be banned from the forum immediately, without any discussion. ― This!"