optional

CEFRB1

/ˈɒp.ʃə.nəl/

adjective

Türkçe translations

Translating…

In plain English

01
adjective
Available to choose but not required.
02
adjective
Extra detail
In various programming languages, a kind of variable that is assigned a specific data type but may or may not hold an actual value.

Examples

At a glance

Sits at B1 on the CEFR scale

Deep Dive

Extra meanings

In context

Two questions on this entry. Nothing is scored.

Question 1 · Quick check

Practise this properly in the app, where the word comes back before you forget it.

The word in print, with each source given in full.

Do you need to wear eyeliner? As with any makeup step, eyeliner is completely optional. From an artistic perspective, if you are wearing eyeshadow, I almost always recommend wearing eyeliner, unless your eyelids and eyelashes are obscured by the eyebrow area. Eyeliner is a basic part of an eye-makeup design because it shapes and defines the eyes and makes the eyelashes look thicker.
2004, Paula Begoun, The Complete Beauty Bible: The Ultimate Guide to Smart Beauty, Rodale Inc., →ISBN, page 419
In functional languages, there is a data type called the option type, also called the maybe type. Its purpose is to encapsulate a value, which is returned from a function. […] In Java 8, the Optional class has been added to serve as an option type.
2015, Richard M Reese, Learning Java Functional Programming, Packt Publishing Ltd, →ISBN, page 147

Looking a word up is the easy part. LexUp remembers which words you have met and brings them back at the point you were about to forget them.

From option + -al.