The difference between Under and Upper

When used as adjectives, under means being lower, whereas upper means at a higher level, rank or position.

Under is also preposition with the meaning: in or at a lower level than.

Under is also adverb with the meaning: in a way lower or less than.

Upper is also noun with the meaning: that which is higher, contrasted with the lower.

check bellow for the other definitions of Under and Upper

  1. Under as a preposition:

    In or at a lower level than.

  2. Under as a preposition:

    As a subject of; subordinate to.

    Examples:

    "He served in World War II under General Omar Bradley."

  3. Under as a preposition:

    Less than.

  4. Under as a preposition:

    Below the surface of.

  5. Under as a preposition (figuratively):

    In the face of; in response to (some attacking force).

    Examples:

    "to collapse under stress; to give in under interrogation"

  6. Under as a preposition:

    As, in the character of.

    Examples:

    "he writes books under the name John Smith"

  1. Under as an adverb:

    In a way lower or less than.

  2. Under as an adverb:

    In a way inferior to.

  3. Under as an adverb (informal):

    In an unconscious state.

    Examples:

    "It took the hypnotist several minutes to make his subject go under."

  1. Under as an adjective:

    Being lower; being beneath something.

  2. Under as an adjective (medicine, colloquial):

    Under anesthesia, especially general anesthesia; sedated.

    Examples:

    "Ensure the patient is sufficiently under."

  1. Upper as an adjective:

    At a higher level, rank or position.

  2. Upper as an adjective:

    Situated on higher ground, further inland, or more northerly.

  3. Upper as an adjective (geology, of strata or geological time periods):

    younger, more recent

  4. Upper as an adjective (education):

    Of or pertaining to a secondary school.

  1. Upper as a noun:

    That which is higher, contrasted with the lower.

    Examples:

    "As the restless sleeper here, I'll take the lower berth. You take the upper."

  2. Upper as a noun (shoemaking):

    The piece of leather, etc., that forms the top part of a shoe above the sole.

  3. Upper as a noun:

    A stimulant, such as amphetamine, that increases energy and decreases appetite.

  4. Upper as a noun (footwear):

    The Y-shaped strap on flip-flops.

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