Lasting or enduring forever; existing or continuing without end / Continuing indefinitely, or during a long period; perpetual; sometimes used, colloquially, as a strong intensive.

(colloquial) Extremely.

An everlasting flower. / (historical) A durable cloth fabric for shoes, etc.

plural of everlasting

(intransitive, rare) To last always or forever; to continue, endure, or remain.

simple past tense and past participle of everlast

plural of everlasting flower

Any of various species of flower of the genera Gnaphalium, Helichrysum, Anaphalis, or Antennaria.

Cudweed (Gnaphalium uliginosum). / Hylotelephium telephium, a succulent perennial ground cover native to Eurasia.

spoon-leaf cudweed (Gamochaeta purpurea)