stern, grave, forbidding; dignified, stately / strict, unforgiving / tight, close, without gaps / harsh, tough, extreme, severe, hard to withstand (said of natural phenomena)

(rare, archaic) wondrous, miraculous, splendid, sublime / (rare, archaic) dignified, solemn, stern, noble, refined / (rare, archaic) beautiful, pretty

the way in which something is tightly packed or close together without gaps

rule; regulation

school (institution dedicated to teaching and learning)

a regular verb

irregularity, unsteady, disorderly

regular; systematic

academy or non-university college (a post-secondary school not legally considered a university)

(education) high school, senior high school