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

(en verb)

To put in vigorous action.

To make use of, to apply, especially of something non-material.

*{{quote-book, year=1963, author=(Margery Allingham), title=(The China Governess)

, chapter=19 citation , passage=Meanwhile Nanny Broome was recovering from her initial panic and seemed anxious to make up for any kudos she might have lost, by exerting her personality to the utmost. She took the policeman's helmet and placed it on a chair, and unfolded his tunic to shake it and fold it up again for him.}}

* {{quote-news, year=2012, date=18 April, author=Phil McNulty, work=BBC Sport

, title= Chelsea 1-0 Barcelona , passage=Di Matteo clearly saw Drogba's power as a potential threat to a Barcelona defence stripped of Gerard Pique - but he barely caught sight of goal in a first 45 minutes in which the Catalans exerted their technical superiority.}}