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Grammatical Analysis
Sukha: [nt.; adj.] happiness; ease; bliss; pleasure; pleasant feeling. Traditionally derived from su (good, easy) + kha (axle-hole), meaning a smooth-running wheel or carriage that rides perfectly. Doctrinally implies that which is comfortable and easy to endure.
Orthodox Definition
Sukha operates across two primary structural fields in Theravāda psychology: as an affective feeling tone (sukha-vedanā) and as a specific factor of meditative absorption (jhānaṅga).
When arising as an ordinary sensation through the body (kāyika-sukha), it is a pleasant physical feeling. When arising within the mind (cetasika-sukha), it is technically termed somanassa (mental gladness/joy).
As a jhāna factor running through the first, second, and third material absorptions, sukha is the deep, non-sensual spiritual bliss that emerges when the mind is fully sequestered from the five hindrances. The Sāratthadīpanī-ṭīkā defines its characteristic as gratifying or intensifying accompanying states (upabrūhana-lakkhaṇa).
While pīti agitates the mind with active excitement, sukha settles the mind into a profound, tranquil ease, providing the immediate proximate cause (padaṭṭhāna) for the arising of unmoving concentration (samādhi).
Quote
sukhayatīti sukhaṃ, attanā sampayuttadhamme laddhassāde karotīti attho.
Sukhaṃ means “it makes happy”; that is, it makes the conjoined phenomena experience delight in oneself.svāyaṃ kattuniddeso pariyāyaladdho dhammato aññassa kattunivattanattho, nippariyāyena pana bhāvasādhanameva labbhatīti ‘‘sukhanaṃ sukha’’nti vuttaṃ.
This nominative in the agent sense is obtained indirectly, for the purpose of excluding an agent other than the phenomenon itself; directly, however, only the bhāvasādhana is obtained, hence it is stated, “sukhanaṃ sukhaṃ” (making happy is happiness).sātalakkhaṇanti iṭṭhasabhāvattā taṃsamaṅgīpuggalaṃ, sampayuttadhamme vā attani sādayatīti sātaṃ da-kārassa ta-kāraṃ katvā.
Sātalakkhaṇaṃ (having the characteristic of pleasantness) means that, due to its agreeable nature, it delights the person endowed with it or the conjoined phenomena in oneself, by changing the ‘da’ to ‘ta’ (i.e., sādayati to sāta).sātaṃ madhuranti vadanti, sātaṃ lakkhaṇaṃ etassāti sātalakkhaṇaṃ.
They say sāta is pleasant. Sātalakkhaṇaṃ means “whose characteristic is pleasantness”.upabrūhanarasantiādīsu upabrūhanaṃ sampayuttadhammānaṃ saṃvaddhanaṃ, dukkhaṃ viya avissajjetvā adukkhamasukhā viya anajjhupekkhitvā anu anu gaṇhanaṃ upakāritā vā anuggaho.
In upabrūhanarasaṃ and so forth, upabrūhanaṃ is the increase of conjoined phenomena, or support, a form of assistance, like holding on continually without discarding like suffering or neglecting like neither-painful-nor-pleasant.katthacīti paṭhamajjhānādike.
Katthaci means “in the first jhāna and so forth.”paṭilābhatuṭṭhīti paṭilābhavasena uppajjanakatuṭṭhi.
Paṭilābhatuṭṭhī means “delight arising through attainment.”— Sāratthadīpanī-ṭīkā (Paṭhamo Bhāgo, Page 361)
Textual References
- Sutta: Sukhavagga (AN 2) – Detailed taxonomies comparing worldly, household happiness against the vast superiority of monastic, non-sensual, and supramundane bliss.
- Abhidhamma: Dhammasaṅgaṇī (Mapping feeling distributions across states of consciousness).
- Commentary: Visuddhimagga (Chapter IV) – Providing the classic architectural distinctions separating rapture from ease.
- Commentary: Sāratthadīpanī-ṭīkā (Paṭhamo Bhāgo, Page 361) – Commentarial explanation on the grammatical analysis, characteristics, and functions of sukha in relation to associated mental factors.