Yes, it is. (upper arm, upper shelves)
Upper means the part closer to the top than to the bottom, or the higher section or area.
upper
The noun maxilla refers to the upper jaw (upper jawbone, attached to the skull).The adjective is maxillary.The lower jaw, the mandible, has the adjective form mandibular or mandibulary.
The term "upper class" typically does not require a hyphen when used as a noun or adjective in most contexts, such as "the upper class" or "upper class citizens." However, it can be hyphenated as "upper-class" when used as a compound adjective directly before a noun, for example, "upper-class families." Always consider the context to determine if hyphenation is necessary.
The correct spelling of the adjective is humorous (funny, comical).The bone of the human upper arm is the humerus.
* Unbid * Uncut * Undue * Unfit * Unlit * Upper * Upset * Urban * Usual * Utter
No. The capitalized version refers to the US Senate, a proper noun. When used with other nouns (Senate chamber, Senate hearings), it is a noun adjunct. A related adjective is senatorial.
"Mid back" is typically hyphenated when used as an adjective to describe the area between the upper and lower back.
No hyphen is needed for world class. World is just an adjective that describes class much like (for example) upper class, which also does not need a hyphen.
If you're talking about "lower" as the comparative of the adjective low (low, lower, lowest) the opposite would be "higher". If however you mean the verb "to lower" an adequate opposite to use would be "to raise".
No, it is a verb or a noun (to go around, to surround; a round shape). The adjective form is circular.
It is an adjective.It is a an adjective.
Cautious IS an adjective. An adjective is an action!