A meredek emelkedő csúszós.

Word by word:

• a = the
• meredek = steep
• emelkedő = uphill stretch / incline / slope
• csúszós = slippery

So the whole sentence means something like The steep incline is slippery or The steep slope is slippery.

In Hungarian, the verb to be is usually left out in the present tense when the subject is third person singular or plural.

So:

• A meredek emelkedő csúszós. = The steep incline is slippery.

There is no need for van here.

Compare:

• Én fáradt vagyok. = I am tired.
• Te fáradt vagy. = You are tired.
• Ő fáradt. = He/she is tired.

So with ő-type subjects, Hungarian often just uses the adjective without van.

Because they do two different jobs:

• meredek emelkedő = steep incline
  Here meredek is an adjective directly describing the noun. This is called an attributive adjective.

• Az emelkedő csúszós. = The incline is slippery.
  Here csúszós is the main description in the sentence. This is called a predicate adjective.

So:

• before the noun: meredek emelkedő = steep incline
• after the noun: emelkedő csúszós = the incline is slippery

This is very normal in Hungarian.

In this sentence, emelkedő functions as a noun meaning incline, uphill stretch, ascent, slope.

It is historically related to the verb emelkedik = to rise / to go up, and forms like emelkedő can also look like a participle. But in everyday Hungarian, emelkedő is a perfectly normal standalone noun, especially in road or terrain contexts.

So here you should simply learn it as a vocabulary item:

• emelkedő = incline / uphill section

Yes, a here is the definite article, like English the.

• a is used before consonant sounds
• az is used before vowel sounds

Examples:

• a meredek emelkedő = the steep incline
• az autó = the car

So a is used here because meredek begins with a consonant.

A rough pronunciation guide:

• A = short aw / uh
• meredek = ME-re-dek
• emelkedő = E-mel-ke-dő
• csúszós = CHOO-sohsh

A few useful pronunciation points:

• cs sounds like English ch
• sz sounds like English s
• s by itself sounds like English sh
• ő is a long vowel not found in English; it is similar to a long rounded vowel, a bit like saying uh with rounded lips
• stress is always on the first syllable of each word in Hungarian:
  • MEredek
  • Emelkedő
  • CSÚszós

The adjective csúszós comes from csúszik = to slip.

The ending -s often helps form adjectives meaning something like:

• characterized by
• prone to
• having the quality of

So csúszós means slippery, literally something like slip-prone.

Some similar examples:

• poros = dusty
• sáros = muddy
• vizes = wet
• köves = stony

So csúszós út means slippery road.

In this sentence, there is no special adjective agreement ending on meredek.

Hungarian adjectives usually do not change the way adjectives often do in languages like German, French, or Spanish. In a basic noun phrase, the adjective often stays in a simple dictionary form:

• meredek emelkedő = steep incline
• csúszós út = slippery road
• nagy ház = big house

So meredek does not need to change to match emelkedő here.

Yes, Hungarian word order is more flexible than English, but changing it often changes the emphasis.

Neutral version:

• A meredek emelkedő csúszós. = The steep incline is slippery.

You could also say:

• Csúszós a meredek emelkedő.

This still means basically the same thing, but it puts more emphasis on csúszós: It’s slippery, that steep incline.

So the original sentence is a normal, neutral way to say it.

With a, it usually sounds like a specific slope or incline:

• A meredek emelkedő csúszós. = The steep incline is slippery.

If you wanted a more general statement, you might phrase it differently depending on context. But as written, this sounds like you are referring to a particular incline, such as one on a road, path, or hill.

It is especially common for roads, paths, and uphill stretches, but it can also be used more generally for an ascent or incline.

Depending on context, Hungarian may also use words like:

• lejtő = slope / downhill slope
• domboldal = hillside
• hegyoldal = mountainside

So emelkedő often suggests an upward incline, especially one you travel along.