Verb

(obsolete) To go or move under or beneath.

To experience; to pass through a phase.

* {{quote-magazine, date=2013-01-01

, author=Paul Bartel, Ashli Moore , title=Avian Migration: The Ultimate Red-Eye Flight , volume=101, issue=1, page=47–48 , magazine= citation , passage=Many of these classic methods are still used, with some modern improvements. For example, with the aid of special microphones and automated sound detection software, ornithologists recently reported […] that pine siskins (Spinus pinus ) undergo an irregular, nomadic type of nocturnal migration.}}

The project is undergoing great changes.

To suffer or endure; bear with.

The victim underwent great trauma.

She had to undergo surgery because of her broken leg.

Verb

(occurr)

To happen or take place.

* {{quote-book, year=1959, author=(Georgette Heyer), title=(The Unknown Ajax), chapter=1

, passage=And no use for anyone to tell Charles that this was because the Family was in mourning for Mr Granville Darracott […]: Charles might only have been second footman at Darracott Place for a couple of months when that disaster occurred , but no one could gammon him into thinking that my lord cared a spangle for his heir.}}

To present or offer (itself).

(label) To come or be presented to the mind; to suggest (itself).

* 1995 , (Theodore Kaczynski), Industrial Society and Its Future ,

Apparently it never occurs to them that you can't make rapid, drastic changes in the technology and the economy of a society without causing rapid changes in all other aspects of the society as well, [...]

(label) To be present or found.