- sub|sti|tute
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–n.1. a thing used instead of another; person taking the place of another: »
Margarine is a common substitute for butter. A substitute taught us at school today.
SYNONYM(S): expedient, alternate.2. a person who took the place of a draftee in the army or navy, usually for pay, as in the American Civil War.3. Grammar. a word or other linguistic form which under certain circumstances replaces any one of a class of other words or linguistic forms.4. a small flag used in the flag signaling system of a ship to repeat the flag or penant flying above it; repeater. Substitutes make it unnecessary to carry extra sets of flags and pennants to show the same signal several times.–v.t.1. to put in place of another: »We substituted brown sugar for molasses in these cookies.
2. to cause to take the place of: »For real wit he is obliged to substitute vivacity (Oliver Goldsmith).
SYNONYM(S): replace.–v.i.1. to take the place of another; be a substitute: »The retired teacher substituted for our regular teacher, who was sick.
2. Chemistry. to replace one or more equivalents of an element or radical by a like number of equivalents of another.–adj.put in for or taking the place of another: »a substitute teacher.
╂[< Latin substitūtus, past participle of substituere < sub- under + statuere establish < stāre stand]
Useful english dictionary. 2012.