The negative ‘tidak'(not) can combine with some adjectives to form a compound base for ke-..-an nouns, i.e. ke – ROOT WORD – an. These correspond to English nouns with prefix dis– or in-.
| Root Word | Meaning | ke – Root Word – an | Meaning |
|---|---|---|---|
| tidak sama | unequal | ketidak-saman | inequality |
| tidak jujur | dishonest | ketidak-jujuran | dishonesty |
| tidak adil | unjust | ketidak-adilan | injustice |