-нуть

Etymology
.

Usage notes

 * There are two related verbal suffixes. One variant suffix forms primary verbs (i.e. verbs formed directly from a root), and the other variant forms secondary verbs (i.e. verbs originally derived from other terms, although this may no be longer be obvious), usually with a meaning, i.e. with the meaning "to do something once". The properties and conjugations of the two variants are distinct:
 * The primary (type-1) suffix is always unstressed. It forms verbs that are imperfective when unprefixed (perfective when prefixed, as usual), and are usually . The -н of the suffix tends to disappear in the past tense. Examples:
 * (only prefixed)
 * The secondary (type-2) suffix may be stressed or unstressed. It forms and  verbs, which are  when unprefixed. The -н of the suffix is present in all tenses. Examples:
 * Note, for example, the following contrasts:
 * (only prefixed)
 * The secondary (type-2) suffix may be stressed or unstressed. It forms and  verbs, which are  when unprefixed. The -н of the suffix is present in all tenses. Examples:
 * Note, for example, the following contrasts:
 * The secondary (type-2) suffix may be stressed or unstressed. It forms and  verbs, which are  when unprefixed. The -н of the suffix is present in all tenses. Examples:
 * Note, for example, the following contrasts:
 * Note, for example, the following contrasts:
 * Note, for example, the following contrasts:
 * Note, for example, the following contrasts:

Conjugation
primary:

secondary (often semelfactive):