tightening

Plural: tightenings

Noun

• the act of making something tighter
  • "the tightening of economic controls"
• The act or process of making more tight.

Verb

• make tight or tighter
• become tight or tighter
• restrict
• narrow or limit
• present participle and gerund of tighten

Synonyms

constrain, fasten, reduce, stiffen, tighten, tighten up

Antonyms

loosening