everything

even if one says

(more emphatic) Alternative form of しどろ (“shidoro”)

Contraction of わからない (wakaranai), the informal present negative form of わかる (wakaru).

understanding (of feelings, opinions, circumstances, etc.)

causative of わかる (wakaru) / (fiction, pornography, vulgar) to "teach someone a lesson" via rough rape

polite negative of わかる (wakaru); negative of わかります (wakarimasu)

(humorous) Alternative form of わかりません (wakarimasen, “I don't know”)

(adverbial particle, dismissive, derogatory) emphasizes disgust, contempt, or otherwise negative feelings of the speaker: whatever

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend