Antonyms of adv singly

1 of 2 senses of singly

Sense 1
singly -- (one by one; one at a time; "they were arranged singly")
       Antonym of multiply (Sense 1)
      => multiply -- (in several ways; in a multiple manner; "they were multiply checked for errors")

Synonyms of adv singly

2 senses of singly

Sense 1
singly -- (one by one; one at a time; "they were arranged singly")

Sense 2
individually, separately, singly, severally, one by one, on an individual basis -- (apart from others; "taken individually, the rooms were, in fact, square"; "the fine points are treated singly")