diff --git a/doc/fixes36.4 b/doc/fixes36.4
index e841af4f6..5865224cc 100644
--- a/doc/fixes36.4
+++ b/doc/fixes36.4
@@ -10,6 +10,7 @@ GDBPATH and GREPPATH from sysconf or -D... on compilation command line were
 	being processed even if PANICTRACE was disabled but only being freed
 	at end of game when that was enabled
 fix the article used in the message when your steed encounters a polymorph trap
+dozen-ish assorted spelling/typo fixes in messages and source comments
 
 
 Fixes to Post-3.6.3 Problems that Were Exposed Via git Repository
diff --git a/src/bones.c b/src/bones.c
index d5623fcde..da0de0f41 100644
--- a/src/bones.c
+++ b/src/bones.c
@@ -598,7 +598,7 @@ getbones()
 
     if (validate(fd, bones) != 0) {
         if (!wizard)
-            pline("Discarding unuseable bones; no need to panic...");
+            pline("Discarding unusable bones; no need to panic...");
         ok = FALSE;
     } else {
         ok = TRUE;
diff --git a/src/hack.c b/src/hack.c
index dca467262..a48b92cf5 100644
--- a/src/hack.c
+++ b/src/hack.c
@@ -2840,7 +2840,7 @@ int x, y;
     if (!IS_DOOR(lev_p->typ))
         return FALSE;
     /* all rogue level doors are doorless but disallow diagonal access, so
-       we treat them as if their non-existant doors were actually present */
+       we treat them as if their non-existent doors were actually present */
     if (Is_rogue_level(&u.uz))
         return FALSE;
     return !(lev_p->doormask & ~(D_NODOOR | D_BROKEN));
diff --git a/src/options.c b/src/options.c
index 19f189813..c06be7605 100644
--- a/src/options.c
+++ b/src/options.c
@@ -395,7 +395,7 @@ static struct Comp_Opt {
     },
     { "statuslines",
 #ifdef CURSES_GRAPHICS
-      "2 or 3 lines for horizonal (bottom or top) status display",
+      "2 or 3 lines for horizontal (bottom or top) status display",
       20, SET_IN_GAME
 #else
       "2 or 3 lines for status display",
diff --git a/src/potion.c b/src/potion.c
index 16b2c5dda..c6dffc5f9 100644
--- a/src/potion.c
+++ b/src/potion.c
@@ -2260,7 +2260,7 @@ dodip()
                           more_than_one ? " that you dipped into" : "",
                           newbuf);
             else
-                pline("Somehing happens.");
+                pline("Something happens.");
 
             if (old_dknown
                 && !objects[old_otyp].oc_name_known
diff --git a/src/shk.c b/src/shk.c
index 815c2e726..6772da453 100644
--- a/src/shk.c
+++ b/src/shk.c
@@ -4396,7 +4396,7 @@ const char *Izchak_speaks[] = {
     "%s says: 'These shopping malls give me a headache.'",
     "%s says: 'Slow down.  Think clearly.'",
     "%s says: 'You need to take things one at a time.'",
-    "%s says: 'I don't like poofy coffee... give me Columbian Supremo.'",
+    "%s says: 'I don't like poofy coffee... give me Colombian Supremo.'",
     "%s says that getting the devteam's agreement on anything is difficult.",
     "%s says that he has noticed those who serve their deity will prosper.",
     "%s says: 'Don't try to steal from me - I have friends in high places!'",
diff --git a/src/timeout.c b/src/timeout.c
index e3125d8a5..f9df132db 100644
--- a/src/timeout.c
+++ b/src/timeout.c
@@ -93,7 +93,7 @@ const struct propname {
     { UNCHANGING, "unchanging" },
     { REFLECTING, "reflecting" },
     { FREE_ACTION, "free action" },
-    { FIXED_ABIL, "fixed abilites" },
+    { FIXED_ABIL, "fixed abilities" },
     { LIFESAVED, "life will be saved" },
     {  0, 0 },
 };
@@ -1398,7 +1398,7 @@ long timeout;
         break; /* case [otyp ==] candelabrum|tallow_candle|wax_candle */
 
     default:
-        impossible("burn_object: unexpeced obj %s", xname(obj));
+        impossible("burn_object: unexpected obj %s", xname(obj));
         break;
     }
     if (need_newsym)
diff --git a/src/trap.c b/src/trap.c
index d1014fafc..51436d47a 100644
--- a/src/trap.c
+++ b/src/trap.c
@@ -1591,7 +1591,7 @@ struct obj *otmp;
     switch (tt) {
     case ARROW_TRAP:
         if (!otmp) {
-            impossible("steed hit by non-existant arrow?");
+            impossible("steed hit by non-existent arrow?");
             return 0;
         }
         trapkilled = thitm(8, steed, otmp, 0, FALSE);
@@ -1599,7 +1599,7 @@ struct obj *otmp;
         break;
     case DART_TRAP:
         if (!otmp) {
-            impossible("steed hit by non-existant dart?");
+            impossible("steed hit by non-existent dart?");
             return 0;
         }
         trapkilled = thitm(7, steed, otmp, 0, FALSE);
diff --git a/win/curses/cursmain.c b/win/curses/cursmain.c
index e56f0e3ab..1328a4828 100644
--- a/win/curses/cursmain.c
+++ b/win/curses/cursmain.c
@@ -211,8 +211,11 @@ curses_init_nhwindows(int *argcp UNUSED,
     getmaxyx(base_term, term_rows, term_cols);
     counting = FALSE;
     curses_init_options();
-    if ((term_rows < 15) || (term_cols < 40)) {
-        panic("Terminal too small.  Must be minumum 40 width and 15 height");
+    if (term_rows < 15 || term_cols < 40) {
+        panic("Terminal is too small; must have at least %s%s%s.",
+              (term_rows < 15) ? "15 rows" : "",
+              (term_rows < 15 && term_cols < 40) ? " and " : "",
+              (term_cols < 40) ? "40 columns" : "");
     }
     /* during line input, deletes the most recently typed character */
     erase_char = erasechar(); /* <delete>/<rubout> or possibly <backspace> */
diff --git a/win/curses/curswins.c b/win/curses/curswins.c
index 81d8ab435..bd2f505e8 100644
--- a/win/curses/curswins.c
+++ b/win/curses/curswins.c
@@ -504,7 +504,7 @@ curses_puts(winid wid, int attr, const char *text)
     if (curses_is_menu(wid) || curses_is_text(wid)) {
         if (!curses_menu_exists(wid)) {
             impossible(
-                     "curses_puts: Attempted write to nonexistant window %d!",
+                     "curses_puts: Attempted write to nonexistent window %d!",
                        wid);
             return;
         }
diff --git a/win/tty/topl.c b/win/tty/topl.c
index 62fb3eb53..7156bdbce 100644
--- a/win/tty/topl.c
+++ b/win/tty/topl.c
@@ -302,7 +302,7 @@ char c;
     register struct WinDesc *cw = wins[WIN_MESSAGE];
 
     if (cw == (struct WinDesc *) 0)
-        panic("Putsym window MESSAGE nonexistant");
+        panic("Putsym window MESSAGE nonexistent");
 
     switch (c) {
     case '\b':
diff --git a/win/tty/wintty.c b/win/tty/wintty.c
index dd1e34009..ea02b631e 100644
--- a/win/tty/wintty.c
+++ b/win/tty/wintty.c
@@ -1057,7 +1057,7 @@ reset_role_filtering()
 
     add_menu(win, NO_GLYPH, &any, 0, 0, ATR_NONE, "", MENU_UNSELECTED);
     add_menu(win, NO_GLYPH, &any, 0, 0, ATR_NONE,
-             "Uncceptable alignments", MENU_UNSELECTED);
+             "Unacceptable alignments", MENU_UNSELECTED);
     setup_algnmenu(win, FALSE, ROLE_NONE, ROLE_NONE, ROLE_NONE);
 
     end_menu(win, "Pick all that apply");