daily

The word 'daily' is a straightforward formation from the Old English root 'dæg', meaning "day", combined with the adjectival suffix '-lic'. This suffix, which evolved into the modern '-ly', originally meant "body" or "form", thus giving 'dæglic' the literal sense of "having the form or character of a day". Over time, its meaning specialized to describe something pertaining to or occurring on each day. The word's logic is transparent, directly linking the concept of a single day to the regularity implied by the suffix, resulting in its core modern meanings related to everyday occurrence.

Structure: dai (day) + ly (adjective/adverb suffix) - dai: A direct substring of the modern spelling, representing the root 'day'. It originates from Old English 'dæg', meaning "day". - ly: A suffix forming adjectives and adverbs, from Old English '-lic', meaning "having the form or character of".