substitute

Everyday

1. A substitute is a person or thing used instead of another. tree →
2. In sport a substitute (a «sub») is a player who comes on to replace another player. tree →
3. To substitute is to put one thing in the place of another. tree →
4. A substitute teacher is a teacher who takes a class when the usual teacher is away (USA: substitute teacher; UK: supply teacher; Australia: relief teacher). tree →

In the lessons

In maths, «substitute» means put a number in place of a letter or symbol: «substitute 3 for n» means replace n with 3. In cooking you can substitute one ingredient for another. In sport the coach makes a substitution. In school a substitute teacher takes the class for a day. Phrases: «substitute A for B», «a substitute for», «come on as a substitute».

Examples

• We had a substitute teacher today. tree →
• He came on as a substitute in the second half. tree →
• You can substitute honey for sugar in this recipe. tree →
• Substitute 4 for x: 2 × 4 = 8. tree →
• There is no substitute for practice. tree →
• The sub scored the winning goal. tree →
• She substituted a pencil for the broken pen. tree →
• He therefore insisted on Heracles substituting two more labours in their place. tree →

Note

Order trap: «substitute A for B» means use A instead of B. Noun: substitution. Maths: if n = 5, substitute 5 for n in n + 3 to get 8. Short form: sub.

In Jewish tradition

In maths, «substitute» means put a number in place of a letter or symbol: «substitute 3 for n» means replace n with 3. In cooking you can substitute one ingredient for another. In sport the coach makes a substitution. In school a substitute teacher takes the class for a day. Phrases: «substitute A for B», «a substitute for», «come on as a substitute».

Note

Order trap: «substitute A for B» means use A instead of B. Noun: substitution. Maths: if n = 5, substitute 5 for n in n + 3 to get 8. Short form: sub.