early 13c., from Old French devocion "devotion, piety," from Latin devotionem (nominative devotio), noun of action from past participle stem of devovere "dedicate by a vow, sacrifice oneself, promise solemnly," from de- "down, away" (see de-) + vovere "to vow," from votum "vow" (see vow (n.)).
In ancient Latin, "act of consecrating by a vow," also "loyalty, fealty, allegiance;" in Church Latin, "devotion to God, piety." This was the original sense in English; the etymological sense, including secular situations, returned 16c. via Italian and French.
1. He was kneeling by his bed in an attitude of devotion.
2. He recalled her devotion to her husband during his hour of need.
3. I don't mean to keep criticising his devotion to his job.
4. Total devotion it certainly was, slavish devotion some would say.
5. Despite his constant protes-tations of devotion and love, her doubts persisted.