The future tense is formed by taking the present tense form of 'خواستن' (xāstan), to want, and conjugating it to the correct person; this verb in third person singular is 'خواهد' (xāhad). Next, it is put in front of the shortened infinitive of the verb, e.g. خورد ("xord"), thus خواهد خورد ("xāhad xord") 'he/she/it will eat'. For compound verbs, such as تمیز کردن ("tamiz kardan") 'to clean', خواهد goes in between both words, and کردن is reduced to its stem, thus تمیز خواهد کرد ("tamiz xāhad kard") 'he/she/it will clean'. In the negative, 'خواهد' receives ن. "na-" to make نخواهد خورد "naxāhad xord" 'he will not eat'. The future tense is generally avoided in colloquial Persian.