Add to
Add to verb - To make greater in size, amount, or number.
Usage example: the need to be back home before 5:00 p.m. adds to the difficulty of arranging the trip
Increase
Increase verb - To make greater in size, amount, or number.
Usage example: we have to increase the number of season-ticket holders if the local sports franchise is to survive
Add to is a synonym for increase in extend topic. You can use "Add to" instead a verb "Increase", if it concerns topics such as raise, expand, enlarge, augment.
Mutual synonyms
Both terms in one sentence
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Editing a savegame file to increase the amount of ships owned by the player's fleet will correspondingly add to the enemy's as well.
Source: Video Game / Homeworld - This is often why Third Line, Some Waiting and Four Lines, All Waiting bog down...the number of plot elements increase exponentially the more you add to the mix.
Source: Dramatica - Even further averted in Mass Effect 3 since Paragon and Renegade now both add to the same bar, the Reputation bar, which can also be increased by getting non-alignment reputation points (which increase the size of the bar while maintaining the same Paragon to Renegade ratio).
Source: No Points for Neutrality
Cite this Source
Increase and Add to. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/add_to/increase
Add to & Increase. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/add_to/increase>.
Increase or Add to. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/add_to/increase.
Google Ngram Viewer shows how "add to" and "increase" have occurred on timeline