"to subtract," 1540s, "now illiterate" [OED], from Modern Latin substractus, past participle of substrahere, alternative form of subtrahere (see subtraction). Related: Subtracted; subtracting.
unimportant, trivial, inferior, insignificant, exposed, susceptible, conditional, accountable, apt, sensitive, likely, liable, dependent, secondary, vulnerable, prone, replace, supporting, lower, tributary
- substitution reaction,
- substitution therapy,
- substitution transfusion,
Online Etymology Dictionary, © 2010 Douglas Harper