valid

Từ điển Oxford Advanced Learner 8th

valid AW BrE [ˈvælɪd] NAmE [ˈvælɪd] adjective
1. that is legally or officially acceptable
•a valid passport
•a bus pass valid for 1 month
• They have a valid claim to compensation.
2. based on what is logical or true
• She had valid reasons for not supporting the proposals.
•The point you make is perfectly valid.
3. (computing)that is accepted by the system
•a valid password
Opp: ↑invalid
Derived Word: ↑validly

Word Origin:
[valid validly] late 16th cent.: from French valide or Latin validus ‘strong’, from valere ‘be strong’.

Example Bank:
•Is your passport still valid?
•That argument is not strictly valid in this case.
•The agreement is not necessarily valid in other countries.
•The old assumptions are no longer valid.
•The original written contract was held valid.
•These discounts are valid for travel within the continental United States.
•This is a perfectly valid question to raise.
•Vouchers are only valid for races taking place before 31 December.
•We accepted several different approaches as valid.
•We use a different, but equally valid, technique.
•a logically valid deduction
•a universally valid set of moral principles
•Accepting valid criticism is an important part of the learning process.
•Do you have a valid passport?
•He bought a bus pass valid for one month.
•I'm afraid that's not a valid excuse for missing the deadline.
•Of course we'll listen to your complaints, as long as they're valid.