le = l + e5
(completed action marker) / (modal particle indicating change of state, situation now) / (modal particle intensifying preceding clause)

= + : Sir Lancelot (l) has completed (了) his preparations to fight the world. There he stands ready, on top of the Elevator (e5), with a sickle (乛) and a crowbar (亅) in his hands.
to finish / to achieve / variant of 瞭|了[liao3] / to understand clearly

= + : Mnemonic symbol from "to finish" and the shape of the character: a prize cup.

Li Qingzhao (li) is responsible for manufacturing a prize cup (了). She only needs to add a poetic engraving. Unfortunately, she suffers from a writer's block. In the aorta's living room (ao3), someone left a cryptic message engraved on the walls using a sickle (乛), which is still lying on the floor. Being an accomplished poet Li Qingzhao is able to understand the message clearly (了), realizes its poetic potential and starts to engrave it on the prize cup using a crowbar (亅).
(of eyes) bright / clear-sighted / to understand clearly
unofficial variant of 瞭[liao4]

了 character breakdown

variant of 乙[zhe2]

Mnemonic symbol: a sickle.

James II of England of England (zh) inspects his new sickle (乛) in the elevator's kitchen (e2).
"vertical stroke with hook" radical in Chinese characters (Kangxi radical 6) / see also 豎鉤|竖钩[shu4 gou1]

Mnemonic symbol: 亅 looks like a crowbar. Zeus (ju) is bored and presses all the buttons next to the elevator kitchen's (e2) door with his crowbar (亅).

Characters with 了 as component

(noun suffix)
son / child / seed / egg / small thing / 1st earthly branch: 11 p.m.-1 a.m., midnight, 11th solar month (7th December to 5th January), year of the Rat / Viscount, fourth of five orders of nobility 五等爵位[wu3 deng3 jue2 wei4] / ancient Chinese compass point: 0° (north) / subsidiary / subordinate / sub-

= + : Zorro wants to eat an egg in the space station, and he already put it in a prize cup, as he has no egg cup. He also lacks a spoon, so he uses a big flute to crush the egg open.
all alone

= + : Just inside the elevator's kitchen Joan of Arc hands a prize cup to a very proud mosquito. The mosquito won a flute-playing contest.
to treat / to cure / therapy

= + : Li Qingzhao (li) has been having a colorful rash (疒) for a long time now, and she heard that there is a magic cup to cure her sickness in the aorta. In the kitchen (ao2) she sees a golden price cup (了) and starts drinking out of it immediately, and her colorful rash starts to disappear slowly. She still cannot believe that this price cup actually cured (疗) her rash.
short name for Liaoning 遼寧|辽宁[Liao2 ning2] province / Liao or Khitan dynasty (907-1125)

= + : Li Qingzhao (li) just came back from a trip to Liaoning province (辽) and arrived just inside the aorta's kitchen (ao2). She brought two price cups (了) which are shaped like gladiator sandals (辶) at the base.
prosperous / henry (unit of inductance)

= + + : Mnemonic symbol: American scientist Joseph Henry.

Before Henry (亨) invented inductance he used to hang out with Hamlet (h) a lot in front of the engine ((e)ng1). One day he observed Hamlet shifting a mandarin (口) from a price cup (了) to a beret (亠) and vice versa, which gave him the idea of putting an iron core into an electromagnet.
ruthenium (chemistry)
see 釕銱兒|钌铞儿[liao4 diao4 r5] / Taiwan pr. [liao3]

Words with 了

obvious at a glance (idiom)
to laugh away (instead of taking seriously)
lit. one pellet of rat feces spoiled the whole pot of congee (idiom) / fig. one bad apple can spoil the whole bunch
to avoid a problem by walking away from it / to quit
lit. one pellet of rat feces spoiled the whole pot of soup (idiom) / fig. one bad apple can spoil the whole bunch
see 一粒老鼠屎壞了一鍋粥|一粒老鼠屎坏了一锅粥[yi1 li4 lao3 shu3 shi3 huai4 le5 yi1 guo1 zhou1]
better kept under the table (idiom) / not to be disclosed / too inferior to show in public
to be getting on in years / to be of the older generation
to be unable to extricate oneself gracefully / to be put on the spot / to be embarrassed
a little dirt never killed anybody (proverb) / a couple of germs won't do you any harm

Sentences with 了

dài dà
wáng wang wàng
lai lái
le liǎo liào
The King is back!