Indefinite adverbs add an imprecise idea to the sentence. They can indicate quantity, time, manner or degree without giving an exact datum. In llega tarde, tarde indicates the moment, but does not say the time. In habla bastante, bastante marks quantity or intensity, even though the figure is not provided. If removed, the sentence remains correct, but loses that vague information that nuances what is being said. Its function is very similar to that of other adverbs such as those of Adverbios de Tiempo, Adverbios de Lugar or Adverbios de Modo, but here the central idea is the lack of precision.

Very, bastante, poco, más and menos modify the intensity of an adjective, a verb or even another adverb. In very high, very intensifies the adjective. In works quite, bastante modifies the verb and expresses a notable amount. In poco despacio, the adverb changes the degree of another adverb. Más and menos usually compare a quantity or an intensity with another: more fast, less expensive. They do not change form and do not agree in gender or number. Their placement is usually before the word they modify, and with verbs they can also appear before or after depending on the rhythm of the sentence, as seen in Colocación de adverbios.

Uses of quantity and degree in the sentence

Usage	Explanation
High intensity	Use very to indicate a high degree and reinforce the idea it accompanies.
Sufficient quantity	Use quite to say that something has a notable amount without reaching the maximum.
Low quantity	Use little to express a small or limited amount.
Comparative increase	Use more to indicate a greater amount compared to another.
Comparative decrease	Use less to indicate a smaller amount in comparison.

Before, after, never and still place the action in time without specifying an exact moment. Before places something at an earlier point, as in arrived before. After places it at a later moment, as in we leave after. Never denies any temporal possibility: never smokes. Still indicates continuity or persistence: still works or hasn't arrived yet. These adverbs usually go near the verb, and in sentences with several verbs they can be placed next to the conjugated verb or in front of the verbal group. To see their relation with other temporal markers, it is also worth reviewing Adverbios de Tiempo.

Temporal uses without an exact hour

Usage	Explanation
Earlier moment	Use before to place an action in a time prior to the one mentioned.
Later moment	Use after to talk about something that happens later.
Total temporal negation	Use never to say that something does not occur at any moment.
Current persistence	Use still to indicate that something is still happening right now.
Near instant	Use already to indicate that something occurs in this very moment or very soon.

Thus, well and badly express the way in which an action occurs, but without going into details. Thus indicates a form already known or shown: do it this way. Well indicates a correct or satisfactory result: sings well. Badly expresses an incorrect or deficient way: writes badly. These adverbs usually accompany the verb directly and do not change form. With well and badly a more evaluative than descriptive value often appears, while thus tends to depend on context or a preceding gesture. In the same realm of manner, Adverbios de Modo expand other ways of expressing how something is done.

Rules for the use of adverbs of manner

Idea
Así is used to indicate the manner mentioned or shown.
Bien is used to express a correct or positive manner.
Mal is used to express an incorrect or negative manner.
Así can also function to indicate likeness or result.

The position of the adverb changes what receives more attention. If it goes next to the verb, the adverb naturally integrates into the action: llega tarde, come poco. If placed at the start, it marks the frame of the sentence and emphasizes the idea of the adverb: Tarde llegó or Nunca llama. When it modifies an adjective or another adverb, it usually goes in front: very smart, quite far. Some adverbs of time and frequency can also go at the end to give a more natural closing: volveremos mañana, sale siempre. Placement is part of the meaning and is directly related to Colocación de adverbios.

Position of the adverb to give emphasis

Usage	Explanation
Beginning of the sentence	It is placed at the beginning to give more emphasis to the adverb and open the idea with force.
Near the verb	It is placed next to the verb when you want to directly modify the action.
Before the adjective	It is used before the adjective to intensify its meaning.
After the verb	It is placed after the verb to sound natural and neutral in many contexts.
At the end of the sentence	It is placed at the end to finish the information and leave it as a closing.

In everyday use, very common adverbs appear such as ya, aún, todavía, jamás, siempre and nunca. Ya marks a sense of change or imminence: ya salimos. Aún and todavía can express continuity: aún espera. Jamás reinforces a negation stronger than nunca: jamás lo haría. In colloquial speech, some forms sound more natural than others depending on the region and context. Recién is used in many places with temporal value, as in recién llegó, while in other contexts another construction is preferred. The choice of adverb also affects the tone: nunca is neutral, jamás sounds more emphatic, ya can sound urgent or conclusive depending on the sentence. These nuances frequently appear alongside adverbs of Adverbios de Frecuencia and Adverbios de Tiempo.

retíoahoriticaahoritaigual

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Se usa para expresar un tiempo muy cercano con tono amable o informalSe usa a menudo para decir de todos modos o de cierta manera en la conversación diariaSe usa con mucho valor coloquial para indicar un momento cercano o flexibleSe usa de forma coloquial para hablar de una persona cercana o para llamar la atenciónSe usa como intensificador coloquial para decir mucho o muy

Common forms and usage nuances

Region	Variant	Definition	Example
Spain	tío	Used colloquially to talk about a close person or to get attention.	Tío, mira el mono con gafas.Dude, look at the monkey with glasses.
Mexico	ahorita	Used with strong colloquial value to indicate a near or flexible moment.	Voy ahorita y luego regreso con tacos.I'll go right now and then I return with tacos.
Argentina	re	Used as a colloquial intensifier to say a lot or very.	Ese disfraz está re loco.That costume is re crazy.
Colombia	ahoritica	Used to express a very near time with a friendly or informal tone.	Te llamo ahoritica y seguimos el plan del pingüino.I’ll call you ahoritica and we’ll follow the penguin’s plan.
Chile	igual	Often used to say anyway or in a certain way in daily conversation.	Igual fui al parque aunque llovía confeti.Igual I went to the park even though it was raining confetti.

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