You could use a macro like:
Code:
Sub Demo()
Application.ScreenUpdating = False
Dim StrFnd As String
StrFnd = Trim(InputBox("Please input the word to find."))
If StrFnd = "" Then Exit Sub
With ActiveDocument.Range
With .Find
.ClearFormatting
.Replacement.ClearFormatting
.Text = StrFnd
.Replacement.Text = "^&"
.Format = True
.Forward = True
.Wrap = wdFindContinue
.MatchCase = False
.MatchWholeWord = True
.MatchWildcards = False
.MatchSoundsLike = False
.MatchAllWordForms = False
.Execute
End With
If .Find.Found = True Then
.Select
'.HighlightColorIndex = wdYellow
Else
.InsertAfter vbCr & StrFnd
End If
End With
Application.ScreenUpdating = True
End Sub
As coded, the macro merely selects the work if found. If you really do want to apply a highlight, uncomment the expression '.HighlightColorIndex = wdYellow'.