masc nom sg of upekkhaka (adj); masc nom sg of upekkhaka (noun)
Analysis. upa + ikkha + ka: upa- (near, alongside) + √ikkh- (look, see) + -ka (agent nominal suffix). Lit. "one who looks on from close by"; the spatial sense of upa- (approach, nearness) carries into the meditative stance of standing aside yet present to experience.
Etymology. From upa- (up close to, near) + √ikkh- (to look, see), cognate with Sanskrit īkṣ- and Greek ὀφθαλμός (ophthalmos, eye, lit. "that which sees"). The prefix upa- keeps its concrete sense of proximity: equanimity is looking at experience from close beside it, neither grasping nor pushing away. The -ka suffix forms an agent noun or descriptive adjective.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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