يرمش صديقي بسبب الوهج.

يرمش means he blinks or he is blinking.

It is in the imperfect form, which in Modern Standard Arabic often covers:

• a present meaning: he blinks
• a progressive meaning: he is blinking
• sometimes a habitual meaning: he blinks regularly

So in this sentence, the exact English translation depends on context.

This is a very common Arabic word order: verb + subject + other elements.

So:

• يرمش = blinks / is blinking
• صديقي = my friend
• بسبب الوهج = because of the glare

This verb-first pattern is very normal in MSA. Arabic can also use subject-first order, so صديقي يرمش بسبب الوهج is also possible. Both are grammatical, but the original sentence uses the common verb-first style.

صديقي is made of:

• صديق = friend
• ـي = my

So:

• صديق = a friend / friend
• صديقي = my friend

This ـي ending is a possessive suffix. It attaches directly to the noun.

Because Arabic verbs already contain information about the subject.

In يرمش, the verb itself tells you the subject is:

• 3rd person
• masculine
• singular

So Arabic does not need to add a separate pronoun like هو here. Using هو would usually be unnecessary unless you wanted special emphasis.

A careful pronunciation is:

yarmishu ṣadīqī bisababi al-wahaj

A fully vocalized version would be:

يَرْمِشُ صَدِيقِي بِسَبَبِ الْوَهَجِ

Notes:

• يرمش = yar-mi-shu
• صديقي = ṣa-dī-qī
• بسبب = bi-sa-ba-bi
• الوهج = al-wa-haj

In normal written Arabic, short vowels are usually not written, so learners have to know or learn them.

بسبب means because of, due to, or as a result of.

It is used before a noun:

• بسبب الوهج = because of the glare
• بسبب المطر = because of the rain

This is different from لأن, which usually introduces a whole clause:

• يرمش لأن الضوء قوي = He is blinking because the light is strong.

So in your sentence, بسبب is used because the cause is expressed as a noun phrase: الوهج.

الـ is the definite article, meaning the.

So:

• وهج = glare / radiance / brightness
• الوهج = the glare

In context, this often refers to a specific or understood glare, such as bright reflected light or harsh brightness.

After بسبب, the following noun is in the genitive case.

So in full vocalization, it is:

بِسَبَبِ الْوَهَجِ

The final -i sound on الوهجِ marks the genitive.

In normal unvocalized Arabic writing, you usually will not see that ending written, so learners have to know it from grammar.

It can mean either one.

Arabic imperfect verbs often do not force the same distinction that English does between:

• he blinks
• he is blinking

So depending on context, this sentence could mean:

• My friend blinks because of the glare
• My friend is blinking because of the glare

Both are possible.

You would need both a feminine noun and a feminine verb form.

Instead of:

• يرمش صديقي بسبب الوهج

you would say:

• ترمش صديقتي بسبب الوهج

Changes:

• يرمش becomes ترمش for she blinks / is blinking
• صديقي becomes صديقتي for my female friend

Yes. That is also correct.

Compare:

• يرمش صديقي بسبب الوهج = verb-first
• صديقي يرمش بسبب الوهج = subject-first

Both mean the same thing overall. The difference is mainly in style and emphasis:

• verb-first is very common in MSA narrative and formal style
• subject-first can feel a bit more straightforward or slightly more emphatic about the subject

Arabic verbs agree with the subject in person, gender, and number, but not in possession or identity.

So يرمش only tells you:

• 3rd person
• masculine
• singular

It does not tell you who that person is. That is why صديقي still needs to be stated.

Yes, it is a good formal MSA word for glare, radiance, or harsh brightness.

Depending on context, Arabic might also use other expressions involving:

• الضوء = light
• السطوع = brightness
• اللمعان = shine

But الوهج works well if the meaning is strong or uncomfortable brightness causing someone to blink.