I learnt a useful Czech expression today – souhlasím – which means ‘I agree; all right; ok(ay)’. The element hlas (voice; sound; vote) I recognise, and I guessed that the prefix sou- might mean together, or something similar.
According to Wiktionary, sou- is akin to the English prefix co- (together, mutually, jointly), so souhlasím might be literally translated as ‘I together-voice’ or ‘I with-voice’.
Examples of usage and related expressions:
– souhlasím s tebou – I agree with you
– souhlasím s dlouhou procházkou – I am quite game for a long walk
– souhlas = agreement; consent; acceptance; approval; consensus
– souhlasit (s) – to agree (with); approve; concure; assent; go along (with)
– souhlasící = agreeable; congruous; consentaneous
Sources: slovnik.cz, bab.la Dictionary