diff --git a/reference/users/youwen/config/harper-ls/dictionary.txt b/reference/users/youwen/config/harper-ls/dictionary.txt
index 9f3d41c..940fe14 100644
--- a/reference/users/youwen/config/harper-ls/dictionary.txt
+++ b/reference/users/youwen/config/harper-ls/dictionary.txt
@@ -1,8 +1,22 @@
+iff
+PMI
+UCSB
 NixOS
+Youwen
 Vimming
 distros
 Luarocks
 keybinds
+preimage
+injective
+bijective
+bijection
+Pigenhole
+bjiection
 formatters
 transpiles
+Gradescope
+bijections
+disjunction
+biconditional
 hyperextensible