嘘 ⇒
嘘 xū, [噓], to exhale slowly/to hiss/hush!
吹嘘 chuīxū, [吹噓], to brag
嘘声 xūshēng, [噓聲], hissing sound/to hiss (as a sign of displeasure)
唏嘘 xīxū, [唏噓], (onom.) to sigh/to sob
嘘寒问暖 xūhánwènnuǎn, [噓寒問暖], to enquire solicitously about sb's well-being (idiom)/to pamper
喘嘘嘘 chuǎnxūxū, [喘噓噓], variant of 喘吁吁[chuǎn xū xū]