Old stalwart Synonyms

Definitions for Old

(adjective) being of advanced years and especially past middle age
(adjective) dating or surviving from the distant past
(adjective) having been such at some previous time

OS abbreviation

OS is an abbreviation for Old Stalwart

What does OS stand for?

OS stands for "Old Stalwart"

Stalwart replaced

old supporter

Definitions for Stalwart

(adjective) feeling or displaying no fear by temperament
(adjective) having muscles capable of exerting great physical force
(adjective) marked by the ability to withstand stress without structural damage or distortion