truly

 
Pronunciation: /ˈtruːli/

adverb

  • 1in a truthful way: he speaks truly
  • used to emphasize emotional sincerity or seriousness: it is truly a privilege to be here [as submodifier]: I’m truly sorry, but I can’t join you today
  • 2to the fullest degree; genuinely or properly: management does not truly understand about the residents
  • [as submodifier] absolutely or completely (used for emphasis): a truly dreadful song
  • 3in actual fact or without doubt; really: this is truly a miracle
  • 4 archaic loyally or faithfully: why cannot all masters be served truly?

Phrases

yours truly

used as a formula for ending a letter.
humorous used to refer to oneself: the demos will be organized by yours truly

Origin:

Old English trēowlīce 'faithfully' (see true, -ly2)

Spelling rule

Truly is formed from true (minus the silent e) plus the ending -ly.