Grammatical Analysis
Thambha: [m.] obstinacy; stubbornness; mental rigidity; stiffness. Derived from root stambh (to make stiff, prop up, support).
Orthodox Definition
Thambha is classified as one of the minor defilements (upakkilesa) that aggressively stains the mind and prevents spiritual growth. It is closely related to conceit (māna) but manifests specifically as an unyielding, rigid stubbornness.
When a practitioner is afflicted by thambha, their mind becomes stiff and inflexible. They refuse to listen to correction from their preceptors or noble friends (kalyāṇamitta), defend their own faults aggressively, and refuse to apologize or back down even when proven wrong. The commentaries describe it as a swelling or stiffening of the mind that prevents the bowing of the head to the Triple Gem.
Because the Dhamma requires a soft, malleable, and workable mind (mudutā), the rigidity of thambha acts as a massive roadblock to attaining concentration and insight.
Textual References
- Sutta: Vatthūpama Sutta (MN 7) – Listed among the 16 defilements that must be washed from the mind before the cloth can take the dye of the Dhamma.
- Abhidhamma: Vibhaṅga (Defilements division).
- Commentary: Papañcasūdanī – Explaining how obstinacy creates friction within the monastic community.