大小

Noun

 * 1) big and small
 * 2) size ; proportions; dimensions; magnitude
 * 3) old and young; adults and children
 * 4) senior and junior; degree of seniority

Adverb

 * 1) at any rate; anyway

Etymology 1
Compound of.

Noun

 * 1) large and small
 * 2) daisho
 * 3) a pair of taiko drums, consisting of one large and one small taiko
 * 4) long months and short months:
 * 5) in the lunar calendar, long months of 30 days and short months of 29 days
 * 6) in the solar calendar, long months of 31 days and short months of 30 days or less

Etymology 2
Appears to be a compound of 🇨🇬-derived +. Alternatively, may be +.

Appears to be mostly obsolete in modern Japanese, superseded by the term, from adjective. The modern Japanese term with the reading of ōsa is, from adjective , deriving from the same 🇨🇬 root opo as.

Noun

 * 1)  size