up
How to Use Up
Learner’s notesIn plain EnglishA tiny word with dozens of uses, but at its core it means higher, more, active, or working — the opposite of down.
Watch for phrasal verbs where "up" changes the meaning entirely (give up, look up, mess up) — these need to be learned as whole units, not word-by-word.
Word Forms
upped past tense, ups plural, ups singular
Fill the Gap
Can you complete this real example?
She looked _____ at the tall building.
Etymology
From Old English upp, up, from Proto-Germanic *upp — one of the oldest and most basic words in the language, related to "over" and "above."