Idealize v. t. : To make ideal; to give an ideal form or value to; to attribute ideal characteristics and excellences to; as, to idealize real life.

Idealize v. t. : To treat in an ideal manner. See Idealization, 2.

Idealize v. i. : To form ideals.

Example:
What is the name of the psychological tendency to Idealize the past and predict the end of civilization?

Taxonomy
Wiktionary, past participle, present participle, German, The Century, English, Etymology, Translations, regard, free dictionary, search, Infinitive, Third person singular, third-person, simple present, Finnish, Czech, Merriam.

Defination from the web:
idealizing. to idealize (third-person singular simple present idealizes, present participle idealizing, simple past and past participle idealized) ... idealize in Webster's Revised Unabridged Dictionary, G. & C. Merriam, 1913. idealize in The Century Dictionary, The Century Co., New York, 1911 ...