There is no adjective. But the phrase "by the oven" would likely be an adjective prepositional phrase.
part of speech
Adjective
What part of speech is thaw
The part of speech for oscillate is verb.
An adjective is a part of speech.
"Preheat" is a verb, as in, "Go preheat the oven, please." Preheat is a noun, as in, "The label next to the oven knob said, 'Preheat' ".
part of speech
The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
The hottest part of the oven during the cooking process is typically the top heating element or the back of the oven.
The hottest part of the oven when baking is typically the top heating element or the bottom heating element, depending on the oven design.
The part of speech for "explicit" is an adjective.
The part of speech for "twirl" is a verb.
The part of speech for "unfamiliar" is an adjective.
The part of speech of "came" is a verb.