Similar words
recelo
sospecha is the more common, everyday word for "suspicion"; recelo is more about a wary, uneasy distrust.
Similar in other languages
German
Verdacht
Verdacht is the German word for the same thing — both mean "suspicion."
French
soupçon
soupçon is the French word for the same thing — both mean "suspicion."
Practice
1 What does sospecha mean?
suspicion
2 Fill the gap: Tengo una ___.
Full sentence: Tengo una sospecha. (I have a suspicion.)
3 Which fingerprint chart matches sospecha?
sospecha: neutral register, common frequency, general domain, neutral connotation.