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what does the word "talaga" mean in Filipino..

"talaga" can function either an adjective (real) or an adverb (really).

"mahirap TALAGA na kumita ng pera sa panahon ngayon."
translation: "i'ts REALLY hard to earn money these days." (adverb)

"magsasaka TALAGA siya."
translation: "he's a REAL farmer." (adjective)

In some instance "talaga" could also function as a verb (it's is pronounced quite different from the above though) that means "to assign".

"kailangan ng mag-TALAGA ka ng mga kawal sa pangunahing lagusan."
translation: "you need to ASSIGN guards in the main gate."

we'll we could have helped you a lot if you can show us a sentence where this word was used.

good luck!

:)