Infinitive is the nonfinite form of verb, which means that it doesn't require subject or object (but may have).
For many years in various Neo Black Speech dialects suffix -at was used for infinitives, taken from literal translation of Ring Inscription. But on year 2007 in the issue 17 of journal “Parma Eldalamberon” it's analysis by J.R.R. Tolkien himself was published. And there was stated that -at was suffix of some sort of participle, but with another translation into gerund. So it resembles Latin's Gerundive.
In Nûrlâm there is only one form of infinitive, which is formed by adding suffix -ut to the verb's stem. Some modal verbs, such as “maug” (must) or “gâkh” (may), do not have infinitive form. Additional forms of English Infinitive (passive, perfect, progressive) are technically a clauses with auxiliary verbs and infinitives, and being translated as such. Moreover such complex forms of infinitive usually express some irrealis (not indicative) modalities or used together with impersonal parenthesis which may be transformed into more simple form with relative clauses. However suffixes of aspect may be added in Nûrlâm (for example -ûk, thus resembling active perfect infinitive), and simple passive infinitive may be expressed with gerundive. Examples:
The role of infinitives in the sentence are restricted to:
Infinitive is rarely used in Nûrlâm as modifier, adverbial and after verb “to be”, as the Gerundive should be used instead (as in Ring Inscription). Infinitive in Nûrlâm may replace English gerund (despite the term “gerundive” seeming similar). Infinitive can take other words to form a non-finite clause. Pronominal objective suffixes can be attached to infinitives, the same way as to gerundives in Ring Inscription (e.g. krimputul = to bind them). When used as object, infinitive may be joined by the postposition; in that case, it is written separately after the infinitive.
Unlike many languages, the infinitive is not a dictionary form of verbs in Nûrlâm, with Imperative/Jussive being such form. However jussive form (without suffix -ut) is sometimes called “bare infinitive”. But this term should not be confused with English bare infinitive. Modal verbs in Nûrlâm always require full infinitive (with suffix -ut) as their predicative, while bare infinitive of Nûrlâm is restricted to few modalities.
Nûrlâm's author suggests the reason of adopting gerundive suffix -at for infinitive in late orcish dialects (as Svartiska or Shadowlandian). Because of similarity gerundives and infinitives were often interchangeable in colloquial speech. As gerundives were used more frequently, in Modern Nûrlâm infinitives took gerundive's ending -at and its functions, but combined grammatical form is called infinitive.
Here is comparison chart summarizing distinctions between Infinitive and Gerundive:
|Roles in the sentence|
|Main verb of compound predicate||✔||✘|
|Main verb of impersonal sentence||✔4)||✔5)|
|purpose (“in order to” either implied or explicit, answers to questions with “why?”)||✘||✔|
|intention (“be about to”, “be going to”)||✘||✔|
|necessity (after impersonal sentences like “it's necessary” or “it's important”, without modal verbs)||✘||✔|
|habits (“used to”)||✘8)||✘9)|
|expression of strong advice in current circumstances “had better” and personal preferences “would rather”, do not have direct correspondence in Nûrlâm, but infinitives and gerundives may be used to translate them||✘10)||✘11)|
|commands and strong advices to explicit person, e.g. after verbs like “command”, “order”, “demand”, “insist”, “request”, “recommend”, “propose”, “suggest”, “expect”, “advice” etc. (Jussive modality)||✘||✔|
|desires and wishes to another person to do an action, e.g. after verbs like “want”, “wish”, “expect”, “wait” smb. to do smth.||✘||✔|
|conditional phrases like “to be honest”, “to think” with conjunction “if” (usually omitted in English) and other parts (when future tense is implied)||✘||✔|