Wordiyo
RootsVocabularyCoursesGuidesMy WordsPricing
Wordiyo

Build your English vocabulary systematically through roots and etymology.

Explore

  • Roots
  • Vocabulary
  • My Words

Learn

  • Guides
  • Pricing

Company

  • About
  • Terms
  • Privacy

© 2026 Wordiyo.

  1. Home
  2. /All Roots
  3. /aug

aug

Latin

increase, make grow; foretell by omen

Variants:augauguaucaugur
Your mastery

About This Root

The root aug comes from Latin augere — 'to increase, to make grow, to enlarge.' At its heart is a simple farmer's image: making a heap bigger, a crop fuller, a fortune larger. From this single idea of growth, the family branches in two surprising directions: one practical, one religious.

The practical branch is easy to follow. augere gave augmentum 'an increase,' which became English augment (to make bigger) and augmentation (the increase itself). Less obviously, it also produced auction. A Roman auctio was literally 'an increasing' — the price kept growing as bidders outbid one another. The word still describes exactly that: a sale where the number only goes up.

The religious branch is where it gets interesting. To Romans, before any major undertaking — founding a city, taking office, going to war — you needed the gods to grant their increase, their favor and growth. The official who checked for this divine green light was the augur, a priest who watched the flight and feeding of birds for signs. His reading was the augury — the omen. The verb augur survives meaning 'to be a sign of what's coming' (this augurs well). And inaugurate literally means 'to take the omens first, then begin': in- (in/on) + augurare. A Roman magistrate was inaugurated only after the augur confirmed the gods approved. That is why we still inaugurate presidents and inaugurate (open) a new building or service — the word always marks a formal, blessed beginning. The adjective inaugural describes that first ceremony or first instance.

Then there is august. The Latin augustus meant 'consecrated, majestic' — literally 'increased (by the gods), full of authority.' When Octavian became Rome's first emperor, the Senate gave him the title Augustus, 'the revered one.' His month, Sextilis, was renamed August in his honor — which is why an everyday calendar word hides an emperor inside it. The adjective august (notice the different stress: au-GUST, not AU-gust the month) still means imposing, dignified, commanding respect.

Two cousins are worth knowing. author and authorize come from Latin auctor 'one who causes to grow, an originator, a backer' — the same augere root, the person who makes something increase or take off. And auxiliary comes from auxilium 'help, aid' — help being a kind of 'increase' to your own strength. So the next time you augment a budget, bid at an auction, or watch a president be inaugurated, you are touching the same Latin idea: making something grow, or asking the gods to.

From Latin augere 'to increase, make grow,' source of augment and auction (a sale where prices grow). A ritual branch gave augur 'the priest who read omens to secure the gods' increase/favor' and inaugurate 'to begin after a favorable omen.' august = '(blessed with) growing dignity,' and the month August honors Emperor Augustus.
Memory Tip

Think of augere as 'to grow bigger.' augment = make it bigger; auction = price keeps growing; augur = a priest asking the gods for growth/favor by reading birds, which then predicts the future; inaugurate = take the omen first, then begin.

Core Words Deep Dive

The few words from this family worth telling in full — one by one.

auction

The hidden surprise of the family. Latin auctio meant 'an increasing,' from augere. A Roman auction was named not for the goods or the sale, but for the one thing that kept happening: the price rising as bidders competed. The word froze that motion — to this day an auction is defined by numbers that only go up.

augur

The bridge between 'increase' and 'omen.' An augur was a Roman priest who read birds to learn whether the gods would grant their favor — their 'increase' — to an undertaking. From reading divine approval came the modern verb: to augur is to be a sign of what's coming (the early sales augur well for the launch).

inaugurate

Literally 'to take the omens first, then begin' (in- + augurare). A Roman official only took office after the augur confirmed the gods approved. That ritual sense of a blessed, formal start survives perfectly: we inaugurate a president into office and inaugurate (open) a bridge, a service, or an era.

augment

The most literal member: augere → augmentum 'an increase.' To augment is simply to add to something that already exists, making it larger or stronger — augment your income, augment a team. It carries a faint sense of supplementing rather than replacing: you build on what's there.

Related Roots

amplSimilar

Both convey 'making bigger,' but aug (augere) is about increasing quantity or degree — augment a budget, augmentation, auction (rising price). ampl (amplus, 'spacious') is about widening extent or volume — amplify a sound, ample room. Quick test: more of it → aug; wider/louder → ampl.

Associated Words · 8

Filter:

auction

A public sale to the highest bidder; to sell at auction

IELTSGREB2

augment

To increase or make larger; to supplement

IELTSTOEFLGRE

augmentation

The act of increasing or enlarging; an addition

GREB1

augur

To be an omen of; an ancient Roman official who interpreted omens

GREB1

augury

An omen or sign of future events; divination from animal behaviour

GREC2

august

Majestic, dignified, and inspiring great respect

IELTSGREA1

inaugural

Marking the beginning of an office or venture; an inaugural speech or ceremony

GREB1

inaugurate

To formally induct into office; to officially open or begin with a ceremony

IELTSTOEFLGRE