colder

As an adjective colder

is (cold).

As a letter x is

the twenty-fourth letter of the.

As a symbol x is

voiceless velar fricative.

As adjectives the difference between colder and mild

is that colder is (cold) while mild is gentle and not easily provoked.

As a noun mild is

(british) a relatively low-gravity beer, often with a dark colour; mild ale.

As adjectives the difference between colder and undefined

is that colder is (cold) while undefined is lacking a definition or value.

As adjectives the difference between hotter and colder

is that hotter is (hot) while colder is (cold).

As a noun hotter

is (uk|slang) one who steals a vehicle in order to joyride.

As a verb hotter

is (uk|dialect|north england|dated) to vibrate; to rattle.

As a noun vacation

is freedom from some business or activity.

As a verb vacation

is to spend or take a vacation.

As an adjective colder is

(cold).

As a noun midnight

is the middle of the night; 12:00 am; on a 12-hour clock, 12:00 at night; on a 24-hour clock, 00:00.

As an adjective colder is

(cold).

As adjectives the difference between colder and coldest

is that colder is comparative of cold while coldest is superlative of cold.

As a noun refrigerator

is a household appliance used for keeping food fresh by refrigeration (short form fridge ).

As an adjective colder is

(cold).

As adjectives the difference between colder and cooler

is that colder is comparative of cold while cooler is comparative of cool.

As a noun cooler is

anything which cools.