en solitario

(adj.) = single-handed, solo, single-handedly, one-man

Ex. So we see extraordinary hardships cheerfully borne (indeed, apparently enjoyed) by zealous mountaineers, earnest single-handed yachtsmen floating round the world, and all-weather fishing-hobbyists sit patiently at the side of, and sometimes in, rivers, undeterred by the paucity of their catches.

Ex. The study clearly shows the high prevalence of solo research in the field of bibliometrics.

Ex. He almost single-handedly created Nigeria's first academic press and, with his wife, its 1st university bookshop.

Ex. Then reading of this story aloud to young children as they look at the pictures, needs a firm, quiet voice, until that glorious wordless pictorial passage showing the 'wild rumpus,' when at least one reader discovers it is necessary to give a one-man vocal performance of some rumbustious classical music as accompaniment to the viewing of those pages.

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(adj.) = single-handed, solo, single-handedly, one-man

Ex: So we see extraordinary hardships cheerfully borne (indeed, apparently enjoyed) by zealous mountaineers, earnest single-handed yachtsmen floating round the world, and all-weather fishing-hobbyists sit patiently at the side of, and sometimes in, rivers, undeterred by the paucity of their catches.

Ex: The study clearly shows the high prevalence of solo research in the field of bibliometrics.

Ex: He almost single-handedly created Nigeria's first academic press and, with his wife, its 1st university bookshop.

Ex: Then reading of this story aloud to young children as they look at the pictures, needs a firm, quiet voice, until that glorious wordless pictorial passage showing the 'wild rumpus,' when at least one reader discovers it is necessary to give a one-man vocal performance of some rumbustious classical music as accompaniment to the viewing of those pages.