adj. & adv. colloq.
--adj.
1. smart; stylish.
2 of or associated with the upper classes (spoke with a posh accent).
--adv. in a stylish or upper-class way (talk posh; act posh).
Phrases and idioms:
posh up smarten up.
Derivatives:
poshly adv. poshness n.
Etymology: 20th c.: perh. f. sl. posh a dandy: port out starboard home (referring to the more comfortable accommodation on ships to and from the East) is a later association and not the true origin