diff --git a/searx/engines/duckduckgo_definitions.py b/searx/engines/duckduckgo_definitions.py
index 0473b0a95..a9098de65 100644
--- a/searx/engines/duckduckgo_definitions.py
+++ b/searx/engines/duckduckgo_definitions.py
@@ -1,6 +1,8 @@
 # SPDX-License-Identifier: AGPL-3.0-or-later
-"""
- DuckDuckGo (Instant Answer API)
+# lint: pylint
+# pylint: disable=missing-function-docstring
+"""DuckDuckGo (Instant Answer API)
+
 """
 
 import json
@@ -48,7 +50,7 @@ def is_broken_text(text):
 
 
 def result_to_text(text, htmlResult):
-    # TODO : remove result ending with "Meaning" or "Category"
+    # TODO : remove result ending with "Meaning" or "Category"  # pylint: disable=fixme
     result = None
     dom = html.fromstring(htmlResult)
     a = dom.xpath('//a')
@@ -63,13 +65,18 @@ def result_to_text(text, htmlResult):
 
 def request(query, params):
     params['url'] = URL.format(query=urlencode({'q': query}))
-    language = match_language(params['language'], supported_languages, language_aliases)
+    language = match_language(
+        params['language'],
+        supported_languages,   # pylint: disable=undefined-variable
+        language_aliases
+    )
     language = language.split('-')[0]
     params['headers']['Accept-Language'] = language
     return params
 
 
 def response(resp):
+    # pylint: disable=too-many-locals, too-many-branches, too-many-statements
     results = []
 
     search_res = json.loads(resp.text)
@@ -124,17 +131,23 @@ def response(resp):
             firstURL = ddg_result.get('FirstURL')
             text = ddg_result.get('Text')
             if not is_broken_text(text):
-                suggestion = result_to_text(text,
-                                            ddg_result.get('Result'))
+                suggestion = result_to_text(
+                    text,
+                    ddg_result.get('Result')
+                )
                 if suggestion != heading and suggestion is not None:
                     results.append({'suggestion': suggestion})
         elif 'Topics' in ddg_result:
             suggestions = []
-            relatedTopics.append({'name': ddg_result.get('Name', ''),
-                                  'suggestions': suggestions})
+            relatedTopics.append({
+                'name': ddg_result.get('Name', ''),
+                'suggestions': suggestions
+            })
             for topic_result in ddg_result.get('Topics', []):
-                suggestion = result_to_text(topic_result.get('Text'),
-                                            topic_result.get('Result'))
+                suggestion = result_to_text(
+                    topic_result.get('Text'),
+                    topic_result.get('Result')
+                )
                 if suggestion != heading and suggestion is not None:
                     suggestions.append(suggestion)
 
@@ -143,19 +156,25 @@ def response(resp):
     if abstractURL != '':
         # add as result ? problem always in english
         infobox_id = abstractURL
-        urls.append({'title': search_res.get('AbstractSource'),
-                     'url': abstractURL,
-                     'official': True})
-        results.append({'url': abstractURL,
-                        'title': heading})
+        urls.append({
+            'title': search_res.get('AbstractSource'),
+            'url': abstractURL,
+            'official': True
+        })
+        results.append({
+            'url': abstractURL,
+            'title': heading
+        })
 
     # definition
     definitionURL = search_res.get('DefinitionURL', '')
     if definitionURL != '':
         # add as result ? as answer ? problem always in english
         infobox_id = definitionURL
-        urls.append({'title': search_res.get('DefinitionSource'),
-                     'url': definitionURL})
+        urls.append({
+            'title': search_res.get('DefinitionSource'),
+            'url': definitionURL
+        })
 
     # to merge with wikidata's infobox
     if infobox_id:
@@ -183,8 +202,10 @@ def response(resp):
                 # * netflix_id
                 external_url = get_external_url(data_type, data_value)
                 if external_url is not None:
-                    urls.append({'title': data_label,
-                                 'url': external_url})
+                    urls.append({
+                        'title': data_label,
+                        'url': external_url
+                    })
                 elif data_type in ['instance', 'wiki_maps_trigger', 'google_play_artist_id']:
                     # ignore instance: Wikidata value from "Instance Of" (Qxxxx)
                     # ignore wiki_maps_trigger: reference to a javascript
@@ -194,9 +215,11 @@ def response(resp):
                     # There is already an URL for the website
                     pass
                 elif data_type == 'area':
-                    attributes.append({'label': data_label,
-                                       'value': area_to_str(data_value),
-                                       'entity': 'P2046'})
+                    attributes.append({
+                        'label': data_label,
+                        'value': area_to_str(data_value),
+                        'entity': 'P2046'
+                    })
                     osm_zoom = area_to_osm_zoom(data_value.get('amount'))
                 elif data_type == 'coordinates':
                     if data_value.get('globe') == 'http://www.wikidata.org/entity/Q2':
@@ -205,12 +228,16 @@ def response(resp):
                         coordinates = info
                     else:
                         # coordinate NOT on Earth
-                        attributes.append({'label': data_label,
-                                           'value': data_value,
-                                           'entity': 'P625'})
+                        attributes.append({
+                            'label': data_label,
+                            'value': data_value,
+                            'entity': 'P625'
+                        })
                 elif data_type == 'string':
-                    attributes.append({'label': data_label,
-                                       'value': data_value})
+                    attributes.append({
+                        'label': data_label,
+                        'value': data_value
+                    })
 
             if coordinates:
                 data_label = coordinates.get('label')
@@ -218,25 +245,31 @@ def response(resp):
                 latitude = data_value.get('latitude')
                 longitude = data_value.get('longitude')
                 url = get_earth_coordinates_url(latitude, longitude, osm_zoom)
-                urls.append({'title': 'OpenStreetMap',
-                             'url': url,
-                             'entity': 'P625'})
+                urls.append({
+                    'title': 'OpenStreetMap',
+                    'url': url,
+                    'entity': 'P625'
+                })
 
     if len(heading) > 0:
-        # TODO get infobox.meta.value where .label='article_title'
+        # TODO get infobox.meta.value where .label='article_title'    # pylint: disable=fixme
         if image is None and len(attributes) == 0 and len(urls) == 1 and\
            len(relatedTopics) == 0 and len(content) == 0:
-            results.append({'url': urls[0]['url'],
-                            'title': heading,
-                            'content': content})
+            results.append({
+                'url': urls[0]['url'],
+                'title': heading,
+                'content': content
+            })
         else:
-            results.append({'infobox': heading,
-                            'id': infobox_id,
-                            'content': content,
-                            'img_src': image,
-                            'attributes': attributes,
-                            'urls': urls,
-                            'relatedTopics': relatedTopics})
+            results.append({
+                'infobox': heading,
+                'id': infobox_id,
+                'content': content,
+                'img_src': image,
+                'attributes': attributes,
+                'urls': urls,
+                'relatedTopics': relatedTopics
+            })
 
     return results