reinforcement

/ˌriːɪnˈfɔːrsmənt/
noun
  1. The act of making something stronger or the extra material used to strengthen it.
    • The wall needs reinforcement before the winter storms arrive.
    • The teacher used positive reinforcement to encourage good study habits.
    • Steel bars provide reinforcement for the concrete.
  2. Extra people or resources sent to support a group, especially in a military or work context.
    • The firefighters requested reinforcements to control the blaze.
    • We called for reinforcements when the project became too large.
    • The army sent reinforcements to the front line.
Antonyms
What does "reinforcement" mean? | whatsthatwordmean | whatsthatwordmean