Behind
Behind adjective - Not arriving, occurring, or settled at the due, usual, or proper time.
Up on
Up on adjective - Being up to particular standard or level especially in being up to date in knowledge.
Behind and up on are semantically related. Sometimes you can use "Behind" instead a preposition "Up on".
Both terms in one sentence
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When Patrick (aka Starfishman) proceeds to free the starfish hostage from the rocket, Dreaded Patrick's minions knock him out from behind and instead, tie him up on the rocket.
- In 7 Days a Skeptic, after Angela locks John in the brig and holds him at gunpoint, he warns her that captain Chahal is sneaking up on her from behind.
Source: Look Behind You / Video Games -
A Calvin and Hobbes strip shows Hobbes hiding behind a standard lamp as he sneaks up on Calvin.
Source: Behind a Stick
Cite this Source
Up on and Behind. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/behind/up_on
Behind & Up on. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/behind/up_on>.
Up on or Behind. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/behind/up_on.
Google Ngram Viewer shows how "behind" and "up on" have occurred on timeline