A person who is not good enough to be considered proficient but may be useful as a backup.
A person who plays second string. A person who is kept on a sports team as a backup in case a "first-string" player is unavailable.
A substitute (usually of a person, position or role).
A politician or person of influence campaigning for a presidential candidate.
Any of a range of Unicode codepoints which are used in pairs in UTF-16 to represent characters beyond the Basic Multilingual Plane.
An ersatz good.
A deputy for a bishop in granting licences for marriage.
A person or animal that acts as a substitute for the social or pastoral role of another, such as a surrogate parent.
A judicial officer of limited jurisdiction, who administers matters of probate and intestate succession and, in some cases, adoptions.
To replace or substitute something with something else; to appoint a successor.
Of, concerning, relating to or acting as a substitute.