Grammarians and bookworms can geek out over more than 1,000 new entries to the Merriam-Webster’s online dictionary, including the words photobomb, face-palm and side-eye.

“Geek out” is in there too, along with truther, yowza, humblebrag and snollygoster -- a nearly forgotten term for a “shrewd, unprincipled person” that has seen a revival in U.S. and U.K. political mud-slinging.

Snollygoster is making a rare return to the dictionary. Merriam-Webster dropped the word back in 2003 because it had become nearly obsolete, but once conservative U.S. TV host Bill O’Reilly began using it frequently, online searches for snollygoster increased.

The word is also apparently making a comeback in the U.K., where an MP recently used it to insult foreign secretary Boris Johnson.

Other political terms now listed by Merriam-Webster include town hall, truther (a person who believes the real truth about something is being covered up in a conspiracy), as well as POTUS and FLOTUS – the acronyms for President of the United States and First Lady of the United States.

Merriam-Webster editors say their 1,000 additions reflect new slang, recent advances in science and technology, English-speakers’ borrowings from other languages, “and everything in between.”

“Because there is no space limitation online, we are allowed to expand as much as we can,” Peter Sokolowski, a U.S.-based editor-at-large for Merriam Webster, told CTV News Channel on Tuesday.

The adjective Seussian refers to things suggestive of Dr. Seuss’ beloved stories and images. A supercentenarian is someone 110 years or older. “Weak sauce” can be used to trash-talk an opponent at a hockey game, or discuss the current global political climate.

Then there are words with very specific meanings, such as bokeh, which you might never use in your life.

Even ghosting, that awful and increasingly common practice of ending a relationship by abruptly cutting off all contact, is now a verb in the dictionary.

Getting a new word published in the dictionary can take years, Sokolowski said. The process begins when a word is noticed, and Merriam-Webster editors begin to collect citations – that is, published examples of the word.

“And once we get an accumulation of those citations over time… we see kind of an increasing frequency and increasing breadth of use and then we recognize it’s time that this word goes into the dictionary when it is broadly used and expected to be understood by the public. For example, if it’s used in big newspapers or online websites.”

A growing trend in the English language, Sokolowski says, is how people are finding new ways to describe relationships with technology.

“Things like abandonware or net neutrality or botnet or … binge-watch or photobomb. These are what we do with the technology that we have, because we’ve already got names for the internet and for cellphones and other things,” he said.

The full list of new online entries and the reasons behind Merriam-Webster’s choices can be found on the dictionary’s website. If there’s a word you can’t find, don’t worry. The editors say they’re already working on the next batch of new entries.