- 2Significado: bindingnecessary essential obligatory requisite required
- 3Significado: inevitableinvoluntary necessary undeniable assuredcertain imminent unavoidable
- 4Significado: necessityrequirement necessary need obligationdemand requisite prerequisite
- 5Significado: requirednecessary essential binding requisite obligatory
- 6Significado: rudimentnecessity basic fundamentalelement necessary essential
- 7Significado: requirementqualification demand vital part postulateessential imperative necessary necessity
- 8Significado: mandatoryimperative obligatory compulsorynecessary urgent imperious
- 9Significado: vitalcrucial essential critical importantintegral necessary strategic
- 10Significado: performing a functionpractical utilitarian useful necessary functional
- 11Significado: obligatorymandatory requisite compelled forcedrequired inescapable necessary compulsory