Out-and-out spineless Synonyms

Definitions for Out-and-out

(adjective) having no exceptions or restrictions
(adjective) trying all possibilities
(adjective) complete and without restriction or qualification; sometimes used informally as intensifiers

OS abbreviation

OS is an abbreviation for Out-and-out Spineless

What does OS stand for?

OS stands for "Out-and-out Spineless"

Definitions for Spineless

(adjective) lacking strength of will or character
(adjective) having or showing a shameful lack of courage
(adjective) weak in willpower, courage or vitality