eu

• Pron

  1. I (first-person singular personal pronoun)
  2. (Brazil) first-person singular prepositional pronoun; me

• Noun
• Intj

não sei

I don't know

porque

• Conj

  because; for (introduces an explanation to the claim in the previous clause)

• Adv

não

• Adv

  1. not; do not; have not (negates the meaning of the verb or adverb)
  2. (Brazil,colloquial) not; do not; have not (negates the meaning of the verb or adverb)
  3. not; do not; have not (negates the meaning of the verb or adverb)
  4. not; do not; have not (negates the meaning of the verb or adverb)
  5. non- (forms antonyms of adjectives)
  6. isn't it? right? (tag question)

• Intj
• Noun

sei

• Verb

  first-person singular present indicative of saber

• Intj