Sticking with just WordNet, you could try to use semantic similarity to determine if two words (synsets) are similar enough to be synonyms. Below is a quick example that came from modifying another of my answers on semantic similarity using WordNet.
It does have its problems though:
- Antonyms are mixed in with synonyms
- It is slow! (as it has to check all ~117k synsets)
Still, it produces more synonyms than using lemma_names
alone, so I leave it here in case it might be useful (in conjunction with something else perhaps).
>>> from nltk.corpus import wordnet as wn
>>> def syn(word, lch_threshold=2.26):
for net1 in wn.synsets(word):
for net2 in wn.all_synsets():
try:
lch = net1.lch_similarity(net2)
except:
continue
# The value to compare the LCH to was found empirically.
# (The value is very application dependent. Experiment!)
if lch >= lch_threshold:
yield (net1, net2, lch)
>>> for x in syn('love'):
print x
Code above outputs:
(Synset('love.n.01'), Synset('feeling.n.01'), 2.538973871058276)
(Synset('love.n.01'), Synset('conditioned_emotional_response.n.01'), 2.538973871058276)
(Synset('love.n.01'), Synset('emotion.n.01'), 2.9444389791664407)
(Synset('love.n.01'), Synset('worship.n.02'), 2.9444389791664407)
(Synset('love.n.01'), Synset('anger.n.01'), 2.538973871058276)
(Synset('love.n.01'), Synset('fear.n.01'), 2.538973871058276)
(Synset('love.n.01'), Synset('fear.n.03'), 2.538973871058276)
(Synset('love.n.01'), Synset('anxiety.n.02'), 2.538973871058276)
(Synset('love.n.01'), Synset('joy.n.01'), 2.538973871058276)
(Synset('love.n.01'), Synset('love.n.01'), 3.6375861597263857)
(Synset('love.n.01'), Synset('agape.n.02'), 2.9444389791664407)
(Synset('love.n.01'), Synset('agape.n.01'), 2.9444389791664407)
(Synset('love.n.01'), Synset('filial_love.n.01'), 2.9444389791664407)
(Synset('love.n.01'), Synset('ardor.n.02'), 2.9444389791664407)
(Synset('love.n.01'), Synset('amorousness.n.01'), 2.9444389791664407)
(Synset('love.n.01'), Synset('puppy_love.n.01'), 2.9444389791664407)
(Synset('love.n.01'), Synset('devotion.n.01'), 2.9444389791664407)
(Synset('love.n.01'), Synset('benevolence.n.01'), 2.9444389791664407)
(Synset('love.n.01'), Synset('beneficence.n.01'), 2.538973871058276)
(Synset('love.n.01'), Synset('heartstrings.n.01'), 2.9444389791664407)
(Synset('love.n.01'), Synset('lovingness.n.01'), 2.9444389791664407)
(Synset('love.n.01'), Synset('warmheartedness.n.01'), 2.538973871058276)
(Synset('love.n.01'), Synset('loyalty.n.02'), 2.9444389791664407)
(Synset('love.n.01'), Synset('hate.n.01'), 2.538973871058276)
(Synset('love.n.01'), Synset('emotional_state.n.01'), 2.538973871058276)
(Synset('love.n.02'), Synset('content.n.05'), 2.538973871058276)
(Synset('love.n.02'), Synset('object.n.04'), 2.9444389791664407)
(Synset('love.n.02'), Synset('antipathy.n.02'), 2.538973871058276)
(Synset('love.n.02'), Synset('bugbear.n.02'), 2.538973871058276)
(Synset('love.n.02'), Synset('execration.n.03'), 2.538973871058276)
(Synset('love.n.02'), Synset('center.n.06'), 2.538973871058276)
(Synset('love.n.02'), Synset('hallucination.n.03'), 2.538973871058276)
(Synset('love.n.02'), Synset('infatuation.n.03'), 2.538973871058276)
(Synset('love.n.02'), Synset('love.n.02'), 3.6375861597263857)
(Synset('beloved.n.01'), Synset('person.n.01'), 2.538973871058276)
(Synset('beloved.n.01'), Synset('lover.n.01'), 2.9444389791664407)
(Synset('beloved.n.01'), Synset('admirer.n.03'), 2.538973871058276)
(Synset('beloved.n.01'), Synset('beloved.n.01'), 3.6375861597263857)
(Synset('beloved.n.01'), Synset('betrothed.n.01'), 2.538973871058276)
(Synset('beloved.n.01'), Synset('boyfriend.n.01'), 2.538973871058276)
(Synset('beloved.n.01'), Synset('darling.n.01'), 2.538973871058276)
(Synset('beloved.n.01'), Synset('girlfriend.n.02'), 2.538973871058276)
(Synset('beloved.n.01'), Synset('idolizer.n.01'), 2.538973871058276)
(Synset('beloved.n.01'), Synset('inamorata.n.01'), 2.538973871058276)
(Synset('beloved.n.01'), Synset('inamorato.n.01'), 2.538973871058276)
(Synset('beloved.n.01'), Synset('kisser.n.01'), 2.538973871058276)
(Synset('beloved.n.01'), Synset('necker.n.01'), 2.538973871058276)
(Synset('beloved.n.01'), Synset('petter.n.01'), 2.538973871058276)
(Synset('beloved.n.01'), Synset('romeo.n.01'), 2.538973871058276)
(Synset('beloved.n.01'), Synset('soul_mate.n.01'), 2.538973871058276)
(Synset('beloved.n.01'), Synset('squeeze.n.04'), 2.538973871058276)
(Synset('beloved.n.01'), Synset('sweetheart.n.01'), 2.538973871058276)
(Synset('love.n.04'), Synset('desire.n.01'), 2.538973871058276)
(Synset('love.n.04'), Synset('sexual_desire.n.01'), 2.9444389791664407)
(Synset('love.n.04'), Synset('love.n.04'), 3.6375861597263857)
(Synset('love.n.04'), Synset('aphrodisia.n.01'), 2.538973871058276)
(Synset('love.n.04'), Synset('anaphrodisia.n.01'), 2.538973871058276)
(Synset('love.n.04'), Synset('passion.n.05'), 2.538973871058276)
(Synset('love.n.04'), Synset('sensuality.n.01'), 2.538973871058276)
(Synset('love.n.04'), Synset('amorousness.n.02'), 2.538973871058276)
(Synset('love.n.04'), Synset('fetish.n.01'), 2.538973871058276)
(Synset('love.n.04'), Synset('libido.n.01'), 2.538973871058276)
(Synset('love.n.04'), Synset('lecherousness.n.01'), 2.538973871058276)
(Synset('love.n.04'), Synset('nymphomania.n.01'), 2.538973871058276)
(Synset('love.n.04'), Synset('satyriasis.n.01'), 2.538973871058276)
(Synset('love.n.04'), Synset('the_hots.n.01'), 2.538973871058276)
(Synset('love.n.05'), Synset('bowling_score.n.01'), 2.538973871058276)
(Synset('love.n.05'), Synset('football_score.n.01'), 2.538973871058276)
(Synset('love.n.05'), Synset('baseball_score.n.01'), 2.538973871058276)
(Synset('love.n.05'), Synset('basketball_score.n.01'), 2.538973871058276)
(Synset('love.n.05'), Synset('number.n.02'), 2.538973871058276)
(Synset('love.n.05'), Synset('score.n.03'), 2.9444389791664407)
(Synset('love.n.05'), Synset('stroke.n.06'), 2.538973871058276)
(Synset('love.n.05'), Synset('birdie.n.01'), 2.538973871058276)
(Synset('love.n.05'), Synset('bogey.n.02'), 2.538973871058276)
(Synset('love.n.05'), Synset('deficit.n.03'), 2.538973871058276)
(Synset('love.n.05'), Synset('double-bogey.n.01'), 2.538973871058276)
(Synset('love.n.05'), Synset('duck.n.02'), 2.538973871058276)
(Synset('love.n.05'), Synset('eagle.n.02'), 2.538973871058276)
(Synset('love.n.05'), Synset('double_eagle.n.01'), 2.538973871058276)
(Synset('love.n.05'), Synset('game.n.06'), 2.538973871058276)
(Synset('love.n.05'), Synset('lead.n.07'), 2.538973871058276)
(Synset('love.n.05'), Synset('love.n.05'), 3.6375861597263857)
(Synset('love.n.05'), Synset('match.n.05'), 2.538973871058276)
(Synset('love.n.05'), Synset('par.n.01'), 2.538973871058276)
(Synset('sexual_love.n.02'), Synset('bondage.n.03'), 2.538973871058276)
(Synset('sexual_love.n.02'), Synset('outercourse.n.01'), 2.538973871058276)
(Synset('sexual_love.n.02'), Synset('safe_sex.n.01'), 2.538973871058276)
(Synset('sexual_love.n.02'), Synset('sexual_activity.n.01'), 2.9444389791664407)
(Synset('sexual_love.n.02'), Synset('conception.n.02'), 2.538973871058276)
(Synset('sexual_love.n.02'), Synset('sexual_intercourse.n.01'), 2.538973871058276)
(Synset('sexual_love.n.02'), Synset('pleasure.n.05'), 2.538973871058276)
(Synset('sexual_love.n.02'), Synset('sexual_love.n.02'), 3.6375861597263857)
(Synset('sexual_love.n.02'), Synset('carnal_abuse.n.01'), 2.538973871058276)
(Synset('sexual_love.n.02'), Synset('coupling.n.03'), 2.538973871058276)
(Synset('sexual_love.n.02'), Synset('reproduction.n.05'), 2.538973871058276)
(Synset('sexual_love.n.02'), Synset('foreplay.n.01'), 2.538973871058276)
(Synset('sexual_love.n.02'), Synset('perversion.n.02'), 2.538973871058276)
(Synset('sexual_love.n.02'), Synset('autoeroticism.n.01'), 2.538973871058276)
(Synset('sexual_love.n.02'), Synset('promiscuity.n.01'), 2.538973871058276)
(Synset('sexual_love.n.02'), Synset('lechery.n.01'), 2.538973871058276)
(Synset('sexual_love.n.02'), Synset('homosexuality.n.01'), 2.538973871058276)
(Synset('sexual_love.n.02'), Synset('bisexuality.n.02'), 2.538973871058276)
(Synset('sexual_love.n.02'), Synset('heterosexuality.n.01'), 2.538973871058276)
(Synset('sexual_love.n.02'), Synset('bestiality.n.02'), 2.538973871058276)
# ...