instrumental singular masculine + api
Analysis. āraññikena (instrumental of āraññika, 'forest dweller') + api ('even, also'), used in ablative sense: 'even by a forest monk', 'by a forest-dwelling ascetic even'.
Etymology. āraññika from āraññā (the forest, neuter abstract from araññā) + -ika (adjective suffix meaning 'of, pertaining to'). Araññā itself is of uncertain origin but semantically related to Sanskrit araṇya. The sense 'forest monk' emerges from the canonical opposition between araññika (forest-dwelling) and gamika (village-dwelling) monks, marking ascetic practice.
Meanings from the Digital Pāḷi Dictionary; morphology and etymology by Claude.
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