diff --git a/PlexAniSync.py b/PlexAniSync.py
index b3f3c231..fa73ea23 100644
--- a/PlexAniSync.py
+++ b/PlexAniSync.py
@@ -80,7 +80,7 @@ def read_settings(settings_file) -> configparser.ConfigParser:
 def start():
     logger.info(f"PlexAniSync - version: {__version__}")
 
-    anilist.CUSTOM_MAPPINGS = read_custom_mappings()
+    anilist.CUSTOM_MAPPINGS, anilist.IGNORED_TITLES = read_custom_mappings()
 
     if graphql.ANILIST_SKIP_UPDATE:
         logger.warning(
diff --git a/README.md b/README.md
index 9a6234c2..7e4c848c 100644
--- a/README.md
+++ b/README.md
@@ -178,6 +178,13 @@ Episodes 1-13 will be mapped to Re:Zero 2nd Season Part 1, episodes 14 and highe
 
 https://anilist.co/anime/99263/Tate-no-Yuusha-no-Nariagari
 
+```yaml
+  - title: "Plex title for series"
+    ignore: true
+```
+
+Prevent a series from syncing. If "seasons" is not set, "ignore: true" is inferred.
+
 - You can remove any existing entries from the example file as they are purely instructional
 - Upon startup it will check if the file is a valid YAML file. The most likely reason it's not is because you didn't put quotes around an anime title with special characters (e.g. ":") in it.
 
diff --git a/anilist.py b/anilist.py
index e8b244bd..5588a056 100644
--- a/anilist.py
+++ b/anilist.py
@@ -12,6 +12,7 @@
 
 logger = logging.getLogger("PlexAniSync")
 CUSTOM_MAPPINGS: Dict[str, List[AnilistCustomMapping]] = {}
+IGNORED_TITLES: List[str] = []
 ANILIST_PLEX_EPISODE_COUNT_PRIORITY = False
 
 # Set this to True for logging failed AniList matches to
@@ -179,6 +180,10 @@ def match_to_plex(anilist_series: List[AnilistSeries], plex_series_watched: List
 
         logger.info("--------------------------------------------------")
 
+        if plex_title in IGNORED_TITLES:
+            logger.info(f'[ANILIST] Ignored: {plex_title}')
+            continue
+
         # Check if we have custom mappings for all seasons (One Piece for example)
         if len(plex_seasons) > 1:
             custom_mapping_season_count = 0
diff --git a/custom_mappings.py b/custom_mappings.py
index 78e596c2..327944cb 100644
--- a/custom_mappings.py
+++ b/custom_mappings.py
@@ -2,7 +2,7 @@
 import os
 import logging
 import sys
-from typing import List
+from typing import List, Dict, Union
 from dataclasses import dataclass
 
 import yamale
@@ -22,6 +22,7 @@ class AnilistCustomMapping:
 
 def read_custom_mappings():
     custom_mappings = {}
+    ignored_titles = []
     if not os.path.isfile(MAPPING_FILE):
         logger.info(f"[MAPPING] Custom map file not found: {MAPPING_FILE}")
     else:
@@ -45,7 +46,17 @@ def read_custom_mappings():
             series_title = str(file_entry['title'])
             synonyms: List[str] = file_entry.get('synonyms', [])
             series_mappings: List[AnilistCustomMapping] = []
-            for file_season in file_entry['seasons']:
+            seasons: List[Dict[str, Untion[str, int]]] = file_entry.get('seasons', [])
+
+            if not seasons and file_entry.get('ignore') is not True:
+                logger.warning(f'[MAPPING] "seasons" is not set, thus "ignore" is inferred | title: {series_title}')
+
+            if file_entry.get('ignore', False) or not seasons:
+                ignored_titles.extend(synonyms + [series_title])
+                logger.info(f'[MAPPING] Ignore | title: {series_title}')
+                continue
+
+            for file_season in seasons:
                 season = file_season['season']
                 anilist_id = file_season['anilist-id']
                 start = file_season.get('start', 1)
@@ -58,4 +69,4 @@ def read_custom_mappings():
             custom_mappings[series_title.lower()] = series_mappings
             for synonym in synonyms:
                 custom_mappings[synonym.lower()] = series_mappings
-    return custom_mappings
+    return custom_mappings, ignored_titles
diff --git a/custom_mappings_schema.yaml b/custom_mappings_schema.yaml
index fc62f3bb..44681e49 100644
--- a/custom_mappings_schema.yaml
+++ b/custom_mappings_schema.yaml
@@ -3,9 +3,10 @@ entries: list(include('entry'), min=1)
 entry:
   title: str()
   synonyms: list(str(), required=False)
-  seasons: list(include('season'), min=1)
+  seasons: list(include('season'), required=False, min=1)
+  ignore: bool(required=False)
 
 season:
   season: int(min=1)
   anilist-id: int(min=1)
-  start: int(required=False)
\ No newline at end of file
+  start: int(required=False)