diff --git a/src/item.cpp b/src/item.cpp
index 45b6536c72043..e2d63e42fa999 100644
--- a/src/item.cpp
+++ b/src/item.cpp
@@ -187,10 +187,6 @@ static const matec_id RAPID( "RAPID" );
 
 static const material_id material_wool( "wool" );
 
-static const mon_flag_str_id mon_flag_DORMANT( "DORMANT" );
-static const mon_flag_str_id mon_flag_POISON( "POISON" );
-static const mon_flag_str_id mon_flag_REVIVES( "REVIVES" );
-
 static const morale_type morale_null( "morale_null" );
 
 static const mtype_id debug_mon( "debug_mon" );
diff --git a/src/magic_spell_effect.cpp b/src/magic_spell_effect.cpp
index 2b4772a92410c..b09c4b5ea0daf 100644
--- a/src/magic_spell_effect.cpp
+++ b/src/magic_spell_effect.cpp
@@ -76,10 +76,6 @@ static const json_character_flag json_flag_PRED2( "PRED2" );
 static const json_character_flag json_flag_PRED3( "PRED3" );
 static const json_character_flag json_flag_PRED4( "PRED4" );
 
-static const mon_flag_str_id mon_flag_DORMANT( "DORMANT" );
-static const mon_flag_str_id mon_flag_NO_NECRO( "NO_NECRO" );
-static const mon_flag_str_id mon_flag_REVIVES( "REVIVES" );
-
 static const mtype_id mon_blob( "mon_blob" );
 static const mtype_id mon_blob_brain( "mon_blob_brain" );
 static const mtype_id mon_blob_large( "mon_blob_large" );
diff --git a/src/mondeath.cpp b/src/mondeath.cpp
index 15cfe225709e0..6bb6e70936c65 100644
--- a/src/mondeath.cpp
+++ b/src/mondeath.cpp
@@ -54,11 +54,6 @@ static const efftype_id effect_no_ammo( "no_ammo" );
 static const harvest_drop_type_id harvest_drop_bone( "bone" );
 static const harvest_drop_type_id harvest_drop_flesh( "flesh" );
 
-static const mon_flag_str_id mon_flag_DROPS_AMMO( "DROPS_AMMO" );
-static const mon_flag_str_id mon_flag_NOGIB( "NOGIB" );
-static const mon_flag_str_id mon_flag_SILENT_DISAPPEAR( "SILENT_DISAPPEAR" );
-static const mon_flag_str_id mon_flag_QUIETDEATH( "QUIETDEATH" );
-
 static const species_id species_ZOMBIE( "ZOMBIE" );
 
 item_location mdeath::normal( monster &z )
diff --git a/src/monster.cpp b/src/monster.cpp
index 1ed2b529516fb..fa20c350bf79a 100644
--- a/src/monster.cpp
+++ b/src/monster.cpp
@@ -157,61 +157,6 @@ static const mfaction_str_id monfaction_bee( "bee" );
 static const mfaction_str_id monfaction_nether_player_hate( "nether_player_hate" );
 static const mfaction_str_id monfaction_wasp( "wasp" );
 
-static const mon_flag_str_id mon_flag_ANIMAL( "ANIMAL" );
-static const mon_flag_str_id mon_flag_AQUATIC( "AQUATIC" );
-static const mon_flag_str_id mon_flag_ATTACK_LOWER( "ATTACK_LOWER" );
-static const mon_flag_str_id mon_flag_ATTACK_UPPER( "ATTACK_UPPER" );
-static const mon_flag_str_id mon_flag_BADVENOM( "BADVENOM" );
-static const mon_flag_str_id mon_flag_CAN_DIG( "CAN_DIG" );
-static const mon_flag_str_id mon_flag_CLIMBS( "CLIMBS" );
-static const mon_flag_str_id mon_flag_CORNERED_FIGHTER( "CORNERED_FIGHTER" );
-static const mon_flag_str_id mon_flag_DIGS( "DIGS" );
-static const mon_flag_str_id mon_flag_DORMANT( "DORMANT" );
-static const mon_flag_str_id mon_flag_EATS( "EATS" );
-static const mon_flag_str_id mon_flag_ELECTRIC( "ELECTRIC" );
-static const mon_flag_str_id mon_flag_ELECTRIC_FIELD( "ELECTRIC_FIELD" );
-static const mon_flag_str_id mon_flag_ELECTRONIC( "ELECTRONIC" );
-static const mon_flag_str_id mon_flag_FILTHY( "FILTHY" );
-static const mon_flag_str_id mon_flag_FIREY( "FIREY" );
-static const mon_flag_str_id mon_flag_FLIES( "FLIES" );
-static const mon_flag_str_id mon_flag_GOODHEARING( "GOODHEARING" );
-static const mon_flag_str_id mon_flag_GRABS( "GRABS" );
-static const mon_flag_str_id mon_flag_HAS_MIND( "HAS_MIND" );
-static const mon_flag_str_id mon_flag_HEARS( "HEARS" );
-static const mon_flag_str_id mon_flag_HIT_AND_RUN( "HIT_AND_RUN" );
-static const mon_flag_str_id mon_flag_HUMAN( "HUMAN" );
-static const mon_flag_str_id mon_flag_IMMOBILE( "IMMOBILE" );
-static const mon_flag_str_id mon_flag_KEEP_DISTANCE( "KEEP_DISTANCE" );
-static const mon_flag_str_id mon_flag_MILKABLE( "MILKABLE" );
-static const mon_flag_str_id mon_flag_NEMESIS( "NEMESIS" );
-static const mon_flag_str_id mon_flag_NEVER_WANDER( "NEVER_WANDER" );
-static const mon_flag_str_id mon_flag_NOHEAD( "NOHEAD" );
-static const mon_flag_str_id mon_flag_NO_BREATHE( "NO_BREATHE" );
-static const mon_flag_str_id mon_flag_NO_BREED( "NO_BREED" );
-static const mon_flag_str_id mon_flag_NO_FUNG_DMG( "NO_FUNG_DMG" );
-static const mon_flag_str_id mon_flag_PARALYZEVENOM( "PARALYZEVENOM" );
-static const mon_flag_str_id mon_flag_PATH_AVOID_DANGER_1( "PATH_AVOID_DANGER_1" );
-static const mon_flag_str_id mon_flag_PATH_AVOID_DANGER_2( "PATH_AVOID_DANGER_2" );
-static const mon_flag_str_id mon_flag_PATH_AVOID_FALL( "PATH_AVOID_FALL" );
-static const mon_flag_str_id mon_flag_PATH_AVOID_FIRE( "PATH_AVOID_FIRE" );
-static const mon_flag_str_id mon_flag_PET_MOUNTABLE( "PET_MOUNTABLE" );
-static const mon_flag_str_id mon_flag_PET_WONT_FOLLOW( "PET_WONT_FOLLOW" );
-static const mon_flag_str_id mon_flag_PHOTOPHOBIC( "PHOTOPHOBIC" );
-static const mon_flag_str_id mon_flag_PLASTIC( "PLASTIC" );
-static const mon_flag_str_id mon_flag_PRIORITIZE_TARGETS( "PRIORITIZE_TARGETS" );
-static const mon_flag_str_id mon_flag_QUEEN( "QUEEN" );
-static const mon_flag_str_id mon_flag_REVIVES( "REVIVES" );
-static const mon_flag_str_id mon_flag_REVIVES_HEALTHY( "REVIVES_HEALTHY" );
-static const mon_flag_str_id mon_flag_RIDEABLE_MECH( "RIDEABLE_MECH" );
-static const mon_flag_str_id mon_flag_SEES( "SEES" );
-static const mon_flag_str_id mon_flag_SMELLS( "SMELLS" );
-static const mon_flag_str_id mon_flag_STUN_IMMUNE( "STUN_IMMUNE" );
-static const mon_flag_str_id mon_flag_SUNDEATH( "SUNDEATH" );
-static const mon_flag_str_id mon_flag_SWIMS( "SWIMS" );
-static const mon_flag_str_id mon_flag_VENOM( "VENOM" );
-static const mon_flag_str_id mon_flag_WARM( "WARM" );
-static const mon_flag_str_id mon_flag_WIELDED_WEAPON( "WIELDED_WEAPON" );
-
 static const species_id species_AMPHIBIAN( "AMPHIBIAN" );
 static const species_id species_CYBORG( "CYBORG" );
 static const species_id species_FISH( "FISH" );
@@ -228,7 +173,6 @@ static const species_id species_ROBOT( "ROBOT" );
 static const species_id species_ZOMBIE( "ZOMBIE" );
 static const species_id species_nether_player_hate( "nether_player_hate" );
 
-
 static const ter_str_id ter_t_gas_pump( "t_gas_pump" );
 static const ter_str_id ter_t_gas_pump_a( "t_gas_pump_a" );