seal

Synonyms: allowance assurance attestation authorization cachet confirmation imprimatur insignia notification permission permit ratification signet sticker tape tie

Antonyms: disapproval refusal

Synonyms: close cork enclose fasten gum isolate paste plaster plug quarantine secure segregate shut stop stopper stop up waterproof

Antonyms: loosen open unseal

Synonyms: assure attest authenticate clinch conclude confirm consummate establish ratify settle shake hands on stamp validate

Antonyms: delay put off refuse