Adverb (fukushi), Adverb taking the 'to' particle
poor (living)
ムリエルさんはバイトで細細と暮らしている。Muriel is making a poor living from her part-time job. barely continuing; just scraping along
Noun or verb acting prenominally
very narrow
as ... とした
Also written 細細【ほそぼそ】