कम समय लगेगा।

The verb is लगेगा.

It comes from the dictionary form लगना, which has several meanings depending on context, such as:

• to attach / be attached
• to seem / feel
• to start
• to take (time, effort, money, etc.)

In this sentence, लगना means to take.

So समय लगेगा literally means something like time will be required / time will be taken.

The ending -ेगा marks the future tense for a masculine singular form.

So:

• लगेगा = will take (masculine singular)
• लगेगी = will take (feminine singular)
• लगेंगे = will take (masculine plural / respectful contexts)

In this sentence, the verb agrees with समय, and समय is masculine singular, so लगेगा is the correct form.

Because समय is a masculine noun in Hindi.

Hindi verbs in this kind of sentence often agree with the noun that represents what is being taken:

• समय लगेगा = time will be needed/taken
• देर लगेगी = delay/time will be needed

Notice the difference:

• समय is masculine → लगेगा
• देर is feminine → लगेगी

So if you changed the noun, the verb form might also change.

Here कम means less or a smaller amount of.

So कम समय means:

• less time
• a short amount of time

It is modifying समय.

A useful comparison:

• कम समय लगेगा = it will take less time
• ज़्यादा समय लगेगा = it will take more time

Here it is functioning like an adjective/quantifier modifying the noun समय.

It tells you how much time.

So in:

• कम समय = less time

कम is describing the amount of समय.

It is not modifying the verb directly here.

Hindi often omits subjects when they are understood from context.

In English, you usually say:

• It will take less time.

But in Hindi, you can simply say:

• कम समय लगेगा।

The idea of it is left unstated because the listener can understand it from the situation.

If needed, Hindi can make the context more explicit, for example:

• यह कम समय लेगा।
• इसमें कम time लगेगा। (more natural fully in Hindi: इसमें कम समय लगेगा।)

But very often, Hindi leaves that part out.

Hindi usually follows Subject/Object/Other information + Verb word order, with the verb near the end.

So:

• कम समय = less time
• लगेगा = will take

That gives:

• कम समय लगेगा

This is very natural Hindi word order.

English uses a dummy subject (it) and puts the verb earlier:

• It will take less time.

Hindi does not need that same structure.

This is one of those very common Hindi verb usages that does not translate word-for-word into natural English.

With nouns like समय (time), वक्त (time), देर (delay), पैसा (money), and मेहनत (effort), लगना often means:

• to be required
• to take

Examples:

• समय लगेगा = time will be required / it will take time
• दो घंटे लगेंगे = it will take two hours
• बहुत पैसा लगेगा = it will cost/take a lot of money
• मेहनत लगेगी = effort will be needed

So this is a very common Hindi pattern worth memorizing.

Yes, there can be.

Often Hindi includes a person with को or leaves it understood from context.

For example:

• मुझे कम समय लगेगा। = It will take me less time.
• उसे कम समय लगेगा। = It will take him/her less time.

Without that phrase, कम समय लगेगा is more general:

• It will take less time
• Less time will be needed

So the sentence is complete on its own, but the experiencer can be added if needed.

Yes, but it means something slightly different.

• कम समय लगेगा = it will take less time
• थोड़ा समय लगेगा = it will take a little time

So:

• कम is often comparative in feel: less, not much
• थोड़ा means a little / some

Examples:

• पहले से कम समय लगेगा। = It will take less time than before.
• थोड़ा समय लगेगा। = It will take a little time.

Both are natural, but they are not exactly identical.

Yes. समय and वक़्त can both mean time.

So you can say:

• कम समय लगेगा।
• कम वक़्त लगेगा।

Both are understandable and natural.

Very generally:

• समय can sound a bit more formal or neutral
• वक़्त is very common in everyday speech too

In this sentence, either works.

Good pattern to learn:

• कम समय लगता है। = It takes less time.
• कम समय लगा। = It took less time.
• कम समय लगेगा। = It will take less time.

So the same basic structure stays the same; only the verb changes for tense.

This is a very useful model sentence for learning लगना with time expressions.

It is natural by itself, especially in conversation.

For example, if people are comparing two methods, someone might simply say:

• कम समय लगेगा।

That is perfectly normal.

Still, in real usage, Hindi often adds context such as:

• इसमें कम समय लगेगा। = This will take less time.
• ऐसा करने में कम समय लगेगा। = It will take less time to do it this way.
• मुझे कम समय लगेगा। = It will take me less time.

So the short sentence is natural, but it depends on context just like English often does.