Related Clues:

• Gives the thumbs-up to
• Brief approvals
• Doesn't deny
• Gives it a thumbs-up
• Gives one's imprimatur to
• Gives a thumbs-up to
• Stamps, say
• Approves, for short
• Lets pass
• Allows to proceed
• Lets go through
• Declares acceptable
• I approve, for short
• Initials, in a way
• They're not forbidding