Synonyms of religious in English:

religious


See US English definition of religious

See UK English definition of religious

See Spanish definition of religioso

adjective

1‘he was a very religious person’

SYNONYMS
devout, pious, reverent, believing, godly, God-fearing, dutiful, saintly, holy, prayerful, churchgoing, practising, faithful, devoted, committed
ANTONYMS

atheistic, irreverent

2‘it was against her religious beliefs’

SYNONYMS
spiritual, theological, scriptural, doctrinal, church, churchly, ecclesiastical, holy, divine, celestial, heavenly, sacred, devotional, sanctified, consecrated, dedicated, hallowed
schismatic, sectarian
ANTONYMS

secular, civil

3‘pay religious attention to detail’

SYNONYMS
scrupulous, conscientious, meticulous, sedulous, punctilious, zealous, strict, rigid, rigorous, exact, close, unfailing, unswerving, undeviating
fussy, pedantic, fastidious, nitpicking, finicky, finical
ANTONYMS

slapdash