In Na’vi verbs are conjugated through the use of infixes. There are two infix positions for verbs, marked by <1>, and <2>, or • in most reference documents. First position infixes go before the first vowel in a word and the second position infixes go before the second vowel, unless otherwise marked​.

Tense

​The infixes that indicate time relative to the speaker are called tense infixes. There are four, basic infixes for tense that go in the first position. They can be found below:

Value	Infix	Example
General Past	<am>	Oe pamähem, I arrived
Proximal Past	<ìm>	Oe pìmähem, ​I just arrived
Proximal Future	<ìy>	Oe pìyähem, ​I will soon arrive
General Future	<ay>	Oe payähem, I will arrive​

You may notice that the past tense shares an m, while the future tense shares a y, and the proximal tenses share an ì while the general tenses share an a. This can help you quickly identify the type of tense being used.

Aspect

When dealing with the flow of time, aspect infixes describe the flow of time relevant to the event occurring. The Na’vi language has two infixes for aspect, the progressive and the perfective.  They go in the first position, and can be found below:

	Infix	Example
Progressive	<er>	Oe kerä, I am going​
Perfective	<ol>	Oe kolä, I have gone​

Compound Tense / Aspect

When infixes for tense and aspect share the same first position, they combine to form compound infixes. There are eight possible combinations, found below:

	Infix	​Example
General Past Progressive	<arm>	Oe tarmaron, I was hunting
General Past Perfective	<alm>	Oe talmaron, I had hunted
Proximal Past Progressive	<ìrm>	Oe tìrmaron, I was just hunting
Proximal Past Perfective	<ìlm>	Oe tìlmaron, I had just hunted
Proximal Future Progressive	<ìry>	Oe tìryaron, I will soon be hunting
Proximal Future Perfective	<ìly>	Oe tìlyaron, I will soon have hunted
General Future Progressive	<ary>	Oe taryaron, I will be hunting
General Future Perfective	<aly>	Oe talyaron, I will have hunted

There is often confusion around when to distinguish between the general past <am> and the general past perfective <alm>. Because the perfective aspect is used to indicate completion of an action, the general past perfective is used when the speaker specifically wants to highlight the completion of an action in the past before moving on to another action. For example, trram oe tamaron, I hunted yesterday vs. trram oe talmaron srekrr oe tamätxaw, I had hunted yesterday before I returned.

​Subjunctive

To express possibility, you use the subjunctive infix <iv>, ie. ‘ivong na’vi, may Na’vi bloom, which goes in the first position. The tense and aspect infixes can be combined with the subjunctive to form compound subjunctive infixes. There are four, and they are found below:

Value	Infix	Example
Past Subjunctive	<imv>	Oe slimvele, I might have swam
Future Subjunctive	<ìyev> or <iyev>	Oe sliyevele, I might swim
Progressive Subjunctive	<irv>	Oe slirvele, I might be swimming
Perfective Subjunctive	<ilv>	Oe slilvele, I might have swam

The past subjunctive and perfective subjunctive bear a similar distinction as the general past and past perfective infixes in that they are used to highlight the state of an action, completed or ongoing.

Mood

Mood is a concept unfamiliar to English speakers, as our mood is conveyed exclusively through intonation and body language. The Na'vi use intonation on top of a verb aspect called mood to indicate their feelings. Verbs are naturally in a neutral mood. To show mood, you use one of two second-position infixes, found below:

	Infix	Example
Positive Mood	<ei>	Oe teiul, I run (and am pleased)​
Negative Mood	<äng>	Oe tängul, I run (and am upset)​