valid

Accepted because it follows the rules or is still allowed to be used.

• You need a valid passport.
• Is this ticket still valid?
• The agreement remains valid for another year.

How to use it: valid for something (This ticket is valid for three days.); valid until something (The permit is valid until December.)

Similar words: acceptable, legitimate

Opposites: invalid

Common phrases: valid passport, valid ticket, valid for travel

Based on good reasons or facts, and worth accepting or considering.

• She has a valid point.
• There is no valid reason to cancel the meeting.
• His concerns about the cost were valid.

Similar words: reasonable, sound, justified, well-founded

Opposites: invalid, unfounded

Common phrases: valid reason, valid argument, valid point