diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index ac0bf178d..5b5e382a7 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -1,4 +1,4 @@
-name: Build and update Documentation
+name: Build and update documentation
 
 # Daily at 0 am
 on:
@@ -31,7 +31,9 @@ jobs:
     - name: Install dependencies via package manager
       run: |
         sudo apt update
-        sudo apt install -y gettext
+        sudo apt install -y gettext hunspell hunspell-pt-br
+        msgfmt -V
+        hunspell -v
 
     - name: Prepare virtual environment
       run: |
@@ -79,6 +81,18 @@ jobs:
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
+    - name: Check spelling of translations
+      run: |
+        make spell
+        cd .pospell/
+        tar -czf ../pospell-out.tar.gz *.txt **/*.txt
+
+    - name: Make spellchecking output available
+      uses: actions/upload-artifact@v1
+      with:
+        name: spellchecking-output
+        path: pospell-out.tar.gz
+
     - name: Build documentation treating warnings as errors
       run: |
         make build CPYTHON_PATH=/tmp/cpython/
diff --git a/.gitignore b/.gitignore
index 57427e91d..8489204af 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 *.mo
 .tx/**/*.po
 venv/
+.pospell/
diff --git a/Makefile b/Makefile
index 600de19b8..1ba0fa374 100644
--- a/Makefile
+++ b/Makefile
@@ -23,6 +23,7 @@ LOCALE_DIR          := $(WORKDIRS)/locale
 JOBS                := auto
 SPHINXERRORHANDLING := "-W"
 TRANSIFEX_PROJECT   := python-newest
+POSPELL_TMP_DIR     := .pospell
 
 
 .PHONY: help
@@ -34,6 +35,7 @@ help:
 	@echo " tx-config    Recreate an up-to-date project .tx/config; calls 'pot'"
 	@echo " pot          Create/Update POT files from source files"
 	@echo " serve        Serve a built documentation on http://localhost:8000"
+	@echo " spell        Check spelling, storing output in $(POSPELL_TMP_DIR)"
 	@echo ""
 
 
@@ -177,9 +179,32 @@ serve:
 	$(MAKE) -C $(CPYTHON_WORKDIR)/Doc serve
 
 
+# list files for spellchecking
+SRCS := $(wildcard *.po **/*.po)
+DESTS = $(addprefix $(POSPELL_TMP_DIR)/out/,$(patsubst %.po,%.txt,$(SRCS)))
+
+
+# spell: run spell checking tool in all po files listed in SRCS variable,
+#        storing the output in text files DESTS for proofreading.  The
+#        DESTS target run the spellchecking, while the typos.txt target
+#        gather all reported issues in one file, sorted without redundancy
+.PHONY: spell
+spell: venv $(DESTS) $(POSPELL_TMP_DIR)/typos.txt
+
+$(POSPELL_TMP_DIR)/out/%.txt: %.po dict
+	@echo "Checking $< ..."
+	@mkdir -p $(@D)
+	@$(VENV)/bin/pospell -l $(LANGUAGE) -p dict $< > $@ || true
+
+$(POSPELL_TMP_DIR)/typos.txt:
+	@echo "Gathering all typos in $(POSPELL_TMP_DIR)/typos.txt ..."
+	@cut -d: -f3- $(DESTS) | sort -u > $@
+
+
 # clean: remove all .mo files and the venv directory that may exist and
 #        could have been created by the actions in other targets of this script
 .PHONY: clean
 clean:
 	rm -fr $(VENV)
+	rm -rf $(POSPELL_TMP_DIR)
 	find -name '*.mo' -delete
diff --git a/dict b/dict
new file mode 100644
index 000000000..85a3e0e75
--- /dev/null
+++ b/dict
@@ -0,0 +1,377 @@
+Aahz
+Abelson
+ActivePython
+Andrew
+Android
+ArgumentParser
+array
+arrays
+ascii
+Ascii
+async
+asyncio
+autoinicialização
+aux
+await
+backend
+backends
+backport
+Beck
+BeOpen
+bignum
+bitbucket
+Black
+Blake Winton
+Boddie
+Boer
+booleana
+booleanas
+Booleanas
+booleano
+booleanos
+Borland
+Bourne
+buffer
+buffers
+bug
+bugs
+bytearray
+bytearrays
+bytecode
+bytecodes
+bzip
+Centrum
+cfuhash
+chamável
+Chapman
+char
+Christian
+Circus
+class
+codec
+Codecs
+Coghlan
+Collin
+Compaq
+const
+contrabarra
+Cookbook
+cookies
+Corporation
+corrotina
+corrotinas
+ctypes
+curl
+currying
+Cynthia
+Cython
+Dalke
+Dan
+datetime
+DateTime
+deadlock
+def
+Delphi
+dict
+dicts
+distutils
+Distutils
+dll
+doc
+docstring
+docstrings
+doctest
+Docutils
+Drake
+egid
+elif
+else
+Emacs
+Eric
+errno
+euid
+except
+exe
+exec
+execv
+exp
+false
+Flying
+foo
+fork
+Foundation
+framework
+frameworks
+François
+Fred
+Fredrik
+freeware
+genexp
+genexps
+Gerald
+gettext
+GiB
+github
+GitHub
+glob
+Gnumeric
+Gordin
+Gordon
+gzip
+Hammond
+Harold
+hash
+Haskell
+Heimes
+Heller
+Henstridge
+Hettinger
+Hewlett
+host
+Hylton
+HyperText
+Ian
+ids
+if
+import
+index
+Index
+initgroups
+Initiatives
+int
+Irix
+IronPython
+Jay
+Jelke
+Jeremy
+Jewett
+Jr
+Julie
+Jython
+Kent
+kernel
+Kernel
+kernels
+KiB
+Krell
+Kuchling
+Language
+len
+libtclsam
+libtksam
+Lisp
+listcomp
+listcomps
+localtime
+log
+logger
+Logger
+loggers
+Loggers
+logging
+Logging
+logs
+loop
+Ltd
+Ltda
+Lucasfilm
+Lundh
+lzma
+Mac
+MacAfee
+Macintosh
+mail
+mailheader
+Majkowski
+Mark
+Markup
+marshal
+Mathematisch
+McAfee
+McMillan
+memoizar
+memoryview
+MemoryView
+Mertz
+metacaractere
+Metacaractere
+metacaracteres
+Metacaracteres
+metaclasse
+metaclasses
+Microsoft
+Minus
+Mitch
+           mixin
+mmap
+Monty
+Moshe
+multithread
+NaN
+NaNs
+National
+ncurses
+netrc
+Neumann
+Nick
+numpy
+NumPy
+NxN
+Object
+OpenSolaris
+OpenSuse
+OverflowError
+Packaging
+Packard
+patches
+Patterns
+pdb
+PEP
+Perl
+Pillow
+Pinard
+pip
+plugin
+plugins
+popen
+PowerShell
+printf
+prompt
+proxy
+pty
+PureProxy
+py
+Py
+pyc
+PyChecker
+Pydb
+Pylint
+PyObject
+PyPy
+PyQt
+PySide
+python
+Python
+Pythônico
+PythonLabs
+Pythonwin
+PythonWin
+PyUnit
+pyvenv
+PyZipFile
+qNaN
+Qt
+Queens
+Randal
+Raymond
+read
+referenciável
+regex
+Research
+reStructuredText
+rfc
+rgid
+root
+Rossum
+Roundup
+Ruby
+ruid
+runner
+Salmela
+scanf
+Scintilla
+script
+scripts
+self
+serialização
+setgroups
+setup
+setuptools
+sgid
+shareware
+shebang
+Shebang
+shell
+shells
+Singleton
+Slice
+slot
+slots
+smalltalk
+sNaN
+Snow
+so
+Solaris
+SourceForge
+spec
+Sphinx
+sscanf
+Standard
+stderr
+stdin
+stdout
+Stichting
+str
+streams
+Streams
+stride
+string
+subcontexto
+subcontextos
+subpacote
+subpacotes
+subst
+substring
+subteste
+suid
+Sussman
+switch
+sys
+tar
+Tcl
+Telnet
+termcap
+thread
+threading
+threads
+Tix
+Tk
+Tkinter
+token
+tokens
+traceback
+true
+try
+tty
+Tuininga
+typedef
+unicode
+Unicode
+unittest
+upload
+urllib
+Usenet
+User
+ValueError
+voltage
+VxWorks
+Water
+wchar
+while
+widgets
+Win
+Windows
+Winter
+Winton
+www
+wxPython
+wxwidgets
+wxWidgets
+WxWidgets
+Xt
+Yellow
+Zadka
+zipfile
+ZipFile
+zlib
+Zope
diff --git a/requirements.txt b/requirements.txt
index f04463587..fb6da3812 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
 transifex-client
 sphinx-intl
 powrap
+pospell