As an adverb contemporaneously

is in the same period of time.

As an adjective undefined is

lacking a definition or value.

As a noun reminiscence

is reminiscence (act of remembering long-past experiences).

As an adjective undefined is

lacking a definition or value.

As adjectives the difference between exterior and undefined

is that exterior is relating to the outside parts or surface of something while undefined is lacking a definition or value.

As a noun exterior

is the outside part, parts or surface of something.

As a noun plimsoll

is (british) a rubber-soled lace-up canvas shoe for sports or onboard ships; a precursor of trainers.

As an adjective undefined is

lacking a definition or value.

As a noun contextualization

is the act or process of putting information into context; making sense of information from the situation or location in which the information was found.

As an adjective undefined is

lacking a definition or value.

As a noun intruder

is someone who intrudes.

As an adjective undefined is

lacking a definition or value.

As adjectives the difference between second and undefined

is that second is number-two; following after the first one with nothing between them the ordinal number corresponding to the cardinal number two while undefined is lacking a definition or value.

As an adverb second

is (with superlative) at the second rank.

As a noun second

is one that is number two in a series or second can be the si unit of time, defined as the duration of 9,192,631,770 periods of radiation corresponding to the transition between two hyperfine levels of caesium-133 in a ground state at a temperature of absolute zero and at rest; one-sixtieth of a minute or second can be one who supports another in a contest or combat, such as a dueller's assistant.

As a verb second

is (uk) to transfer temporarily to alternative employment.

As adjectives the difference between ominous and undefined

is that ominous is of or pertaining to an omen or to omens; being or exhibiting an omen; significant while undefined is lacking a definition or value.

As a noun psych

is psychology or psychiatry.

As a verb psych

is to put (someone) into a required psychological frame of mind (also psych up).

As an interjection psych

is (slang) indicating that one's preceding statement was false and that one has successfully fooled one's interlocutor also sike .

As an adjective undefined is

lacking a definition or value.

As adjectives the difference between founded and undefined

is that founded is having a basis while undefined is lacking a definition or value.

As a verb founded

is .