mellow, ripen, mature, acquire skill
熟 centers on the idea of something reaching its full, softened, or perfected state through time or effort: fruit ripening, flavors mellowing, a person maturing, or skills becoming polished through practice.
熟 combines 孰 (which historically relates to cooking or thoroughness) with 灬 (fire), suggesting the idea of cooking something until it is done, and by extension ripening, maturing, or becoming skilled.
The top part 孰 looks like a pot being tended, and the bottom 灬 is fire. Picture fruit simmering over fire until it becomes soft, mellow, and perfectly ripe—just like a skill that matures with practice.
For ジュク, imagine a ripe, juicy fruit falling into a pot: 'juicy cook' blends into ジュク as the fruit mellows over the fire.
to digest
carriage; movement (of the body)
maturity; ripeness
skill; expertise; experience; proficiency; mastery; dexterity
maturing; ripening; aging; ageing; curing; fermenting
kanji compound
deep sleep; sound sleep; profound sleep
being familiar with; having a thorough knowledge of; being well-informed about
half-cooked; half-done; soft-boiled
to ripen; to mature
full ripeness; full maturity
proficiency; mastery; becoming proficient (in)
digestion; digestibility
maturity; ripeness
careful consideration; deliberation; thinking over carefully
mature in age and wisdom; middle-aged
deliberation; (thoughtful) consideration
careful reading; reading thoroughly; perusal
precocity; early ripening; premature development
mastery