Similar words: definitive, infinite, infinity, infinitude, infinitely, ad infinitum, infinitesimal, initiative. Meaning: [ɪn'fɪnətɪv] 
n. the uninflected form of the verb.
n. the uninflected form of the verb. 
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(1) Modal verbs generally take the bare infinitive.
(2) 'Go' is the infinitive form.
(3) You use "have" to form the perfect infinitive of a verb.
(4) The use of the split infinitive is now generally acceptable.
(5) To is used when the infinitive event is conceived as coming after that of the other verb.
(6) The extremely rare use of the bare infinitive with the passive of perceptual verbs adds further proof that this is the case.
(7) The use of the to infinitive in the second example is more difficult to account for.
(8) This explains why the to infinitive is used here and not the bare form.
(9) The to infinitive expresses therefore a subsequent actualization in this use.
(10) There are fewer contexts where only the bare infinitive seems appropriate.
(11) And yet the bare infinitive has been chosen by the speaker.
(12) The bare infinitive would blunt the sharp edge of this expressive effect.
(13) This explains why the bare infinitive would not be possible in this context.
(14) This shows that the to infinitive necessarily implies the assertion that the pin actually dropped.
(15) He won't get far with those infinitive verbs he uses at the moment.
(16) This explains the exclusive use of the to infinitive after this verb.
(17) In the sentences 'I had to go' and 'I must go', 'go' is an infinitive.
(18) In the sentence 'Let her go, she's done nothing wrong!', the bare infinitive is the word 'go'.
(19) 'To quickly decide' is an example of a split infinitive.
(20) I want that you do it quickly. When the infinitive is used after want,[Sentencedict.com] it must have to:I want study in America. I don't want you coming home so late.
(21) Try and finish quickly. In this structure, try can only be used in the infinitive, or to tell somebody what to do.
(22) These sentences support Erades's and Wood's intuitions about the meaning of the bare infinitive construction.
(23) The helping is represented therefore as a prior condition or circumstance which enables some one to realize the action denoted by the infinitive.
(24) Cause, on the other hand, situates the causal agent prior to the event caused and so requires the to infinitive.
(25) What is coincident with the modal's event is the infinitive event's potentiality, not its actualization.
(26) The distinction between these two ways of conceiving permission accounts for the use of either the bare or the to infinitive here. Sentencedict.com
(27) Bolinger does not mention it, but the opposite is also true: exclusively perceptual verbs refuse the to infinitive.
(28) This is perfectly understandable if in fact after passives the to infinitive evokes a mental construct.
(29) Thus, as above, letting can be analysed as inseparable from the realization of the event evoked by the infinitive.
(30) Given this shift, the appearance of to before the infinitive is not surprising.
More similar words: definitive, infinite, infinity, infinitude, infinitely, ad infinitum, infinitesimal, initiative, take the initiative, definition, redefinition, genitive, punitive, cognitive, cognitively, cognitive psychology, cognitive neuroscience, confining, unfinished, finite, affinity, definite, indefinite, definitely, initial, rhinitis, initiate, ab initio, initially, indefinitely.