diff --git a/app/src/main/java/fr/uca/iut/urbandictionarylight/model/Definition.kt b/app/src/main/java/fr/uca/iut/urbandictionarylight/model/Definition.kt
index 25b302f..6c071b5 100644
--- a/app/src/main/java/fr/uca/iut/urbandictionarylight/model/Definition.kt
+++ b/app/src/main/java/fr/uca/iut/urbandictionarylight/model/Definition.kt
@@ -1,3 +1,5 @@
 package fr.uca.iut.urbandictionarylight.model
 
-data class Definition (var content: String, var upvotes: UInt, var example: String){}
\ No newline at end of file
+data class Definition(val content: String, var upvotes: UInt = 0u, val example: String) {
+    fun upvote() { upvotes++ }
+}
\ No newline at end of file
diff --git a/app/src/main/java/fr/uca/iut/urbandictionarylight/model/Entry.kt b/app/src/main/java/fr/uca/iut/urbandictionarylight/model/Entry.kt
index 93121f6..dfbbd28 100644
--- a/app/src/main/java/fr/uca/iut/urbandictionarylight/model/Entry.kt
+++ b/app/src/main/java/fr/uca/iut/urbandictionarylight/model/Entry.kt
@@ -1,5 +1,59 @@
 package fr.uca.iut.urbandictionarylight.model
 
-class Entry (val phrase: String){
-    val definitions: MutableSet<Definition> = mutableSetOf()
+import fr.uca.iut.urbandictionarylight.utils.Sorting
+
+class Entry(val phrase: String) {
+    private val definitions: MutableSet<Definition> = mutableSetOf()
+
+    fun createDefinition(definition: Definition) {
+        if (definition.content.isNotBlank() && definition.example.isNotBlank()) {
+            definitions.add(definition)
+        }
+    }
+
+    fun readDefinition(id: Int): Definition {
+        // TODO implement once ORM is in place
+        return Definition(
+            content = "poopy butt",
+            example = "Yeah, that's right -- poopy butt. This method hasn't been implemented yet."
+        )
+    }
+
+    fun readAllDefinitions() = definitions.toSet()
+
+    // TODO implement
+    fun readAllDefinitions(criterion: Sorting): Set<Definition> {
+        when (criterion) {
+            Sorting.ASC -> {
+                print("implement asc sorting!")
+                return readAllDefinitions()
+            }
+            Sorting.DESC -> {
+                print("implement desc sorting!")
+                return readAllDefinitions()
+            }
+            else -> return readAllDefinitions()
+        }
+    }
+
+    fun updateDefinition(definition: Definition) {
+        // TODO implement once ORM is in place
+//        removeDefinition(definition.id)
+        createDefinition(definition)
+    }
+
+    // TODO throw this away soon
+    fun updateDefinition(old: Definition, new: Definition) {
+        deleteDefinition(old)
+        createDefinition(new)
+    }
+
+    fun deleteDefinition(definition: Definition) {
+        definitions.remove(definition)
+    }
+
+    fun deleteDefinition(id: Int) {
+        // TODO implement once ORM is in place
+//        definitions.removeIf { def -> id == def.id }
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/fr/uca/iut/urbandictionarylight/utils/Sorting.kt b/app/src/main/java/fr/uca/iut/urbandictionarylight/utils/Sorting.kt
new file mode 100644
index 0000000..4699a98
--- /dev/null
+++ b/app/src/main/java/fr/uca/iut/urbandictionarylight/utils/Sorting.kt
@@ -0,0 +1,5 @@
+package fr.uca.iut.urbandictionarylight.utils
+
+public enum class Sorting {
+    ASC, DESC
+}
\ No newline at end of file