亟 ⇒

• 又         yòu, (once) again/also/both... and.../and yet/(used for emphasis) anyway
• 口         kǒu, mouth/classifier for things with mouths (people, domestic animals, cannons, well...
• 二         èr, two/2/(Beijing dialect) stupid
• 勹         bāo, archaic variant of 包[bāo]
•         

需 ⇒

• 而         ér, and/as well as/and so/but (not)/yet (not)/(indicates causal relation)/(indicates...
• 雨         yǔ/yù, rain/CL:陣|阵[zhèn],場|场[cháng], to rain/(of rain, snow etc) to fall/to precipitate...

亟 ⇒

• 殛        jí, to put to death
• 凾        

需 ⇒

• 懦        nuò, imbecile/timid
• 儒        rú, scholar/Confucian
• 蠕        rú, [蝡], variant of 蠕[rú], to squirm/to wiggle/to wriggle/Taiwan pr. [ruǎn]
• 孺        Rú/rú, surname Ru, child
• 濡        rú, dilatory/to moisten
• 糯        nuò, [稬]/[穤], variant of 糯[nuò], variant of 糯[nuò], glutinous rice/sticky rice
• 嚅        rú, chattering
• 壖        ruán, land on water edge or under wall
• 嬬        xū, mistress, concubine/weak
• 擩        rǔ, to stain/to dye
• 曘        rú, color of the sun/dark
• 獳        nòu, angry dog
• 瓀        ruǎn, opaque/white quartz
• 礝        ruǎn, old variant of 碝[ruǎn]
• 臑        nào, biceps (in Chinese medicine)/(arch.) forelimbs of livestock animal
• 薷        rú, Elshotria paltrini
• 襦        rú, jacket/short coat
• 轜        ér, variant of 輀[ér]
• 醹        rú, strong (of wine)
• 鑐        xū, bolt of a Chinese lock
• 颥        rú, [顬], see 顳顬|颞颥, temple (the sides of human head)
• 嶿        
• 檽        
• 燸        
• 穤        
• 繻        
• 羺        
• 譳        
• 隭        
• 顬        
• 鱬        

亟 ⇒
亟需         jíxū, to urgently need/urgent need
亟待解决         
亟待         jídài, see 急待[jí dài]
亟         jí/qì, urgent, repeatedly/frequently

需 ⇒
需要         xūyào, to need/to want/to demand/to require/requirement/need
需         xū, to require/to need/to want/necessity/need
必需         bìxū, to need/to require/essential/indispensable
需求         xūqiú, requirement/to require/(economics) demand
急需         jíxū, to urgently need/urgent need
无需         wúxū, [無需], needless
必需品         bìxūpǐn, necessity/essential (thing)
军需         jūnxū, [軍需], military supplies
军需品         
亟需         jíxū, to urgently need/urgent need
各取所需         gèqǔsuǒxū, each takes what he needs (idiom)
需求量         
供需         gōngxū, supply and demand
内需         nèixū, [內需], domestic demand
需要量         
特需         tèxū, special need/particular requirement